Test Data on Amsoil Dominator Racing Oil - CorvetteForum - Chevrolet Corvette Forum Discussion (2023)

A few words before getting into the oil test data. Most Forum members have understood and appreciated the oil test data I've posted over the last year and a half or so. But, there were always some who could not accept my results that showed high zinc levels were not always something that could be counted on for superior wear protection. So, there was a lot of hostility over that. And honestly, I can understand why some folks might have a problem with my data showing that. Because for the past couple of decades, the whole Hotrod and Racing Industry did nothing but promote how wonderful high zinc levels were, which may well have been true many years ago when zinc levels first began getting significantly reduced in API certified oils. Therefore, reluctance to accept a wholesale change in thinking is not surprising, even though there are much better alternatives used in low zinc API certified oils nowadays.

The folks who could not accept my data, also seemed to get the wrong idea about it. If the oil they preferred did not rank very high on my list, and they had never had a problem using it, I never said they needed to stop using it. If they had good success with what they use, that meant they were not exceeding the capability of that oil. As long as they continued to stay below that oil’s capability limit, they would never have a problem. But, if they wanted to choose a better oil, for extra wear protection insurance, all they had to do was look at my ranking list and choose a higher ranked oil. In spite of any previous skepticism regarding my testing, we should now be able to put those issues behind us, and move forward on common ground, as one group on the same page. Here's why:

I'm a total perfectionist when it comes to technical matters. I'm a working Professional Degreed Engineer, as well as a U.S. Patent holder, who deals with technical matters for a living. Those who know me personally, know that I would never jeopardize my reputation or my integrity, by posting data that would turn the Hobby/Industry on its ear, unless I was absolutely sure about the data I put out there. And for the record, I do not, and never have, used a one armed bandit tester to perform any motor oil testing. The test results I post are not my opinion, and they are not my theory. They are the actual facts that came out of the Physics and Chemistry involved in the real world testing I perform, at a representative operational temperature of 230*F. Of course I've always known my carefully generated data was completely accurate, but now my data has been validated by a total of three other independent Industry sources. They are as follows:

1. Well known and respected Engineer and Tech Author David Vizard, whose own test data, largely based on real world engine dyno testing, has concluded that more zinc can be damaging, more zinc does not provide today's best wear protection, and that using zinc as the primary anti-wear component, is outdated technology.

2. The GM Oil Report titled, "Oil Myths from GM Techlink", concluded that high levels of zinc are damaging and that more zinc does not provide more wear protection.

3. A motor oil research article written by Ed Hackett titled, "More than you ever wanted to know about Motor Oil", concluded that more zinc does not provide more wear protection, it only provides longer wear protection.

Those familiar with the test data I post, know that my testing came up with the exact same results stated by all three of those independent sources. This is an example where wear testing using an oil tester, engine dyno testing and proper motor oil research using only the facts, from four independent sources, all converged to agree and come to the same exact conclusion. Back-up validation proof, doesn't get any better than this, in the world we live in. In fact, in most cases in the Hotrod and Racing Industry, if you ask 10 people a question, you will get 10 different answers.

So, with all those sources in total agreement, that should provide more than adequate proof to anyone who questioned my test data, that the posts I make about motor oil testing, are absolutely correct. And that questioning one of them, questions them all. So hopefully, we can leave all the arguments behind, and as we go forward, engage in respectful motor oil discussions, which we all have an interest in.

Now, on with the oil data that is the subject of this posting. Synthetic 10W30 Amsoil Dominator Racing Oil, is the latest high zinc oil I've tested. Here is the Lab Test data that came back from Professional Lab, ALS Tribology in Sparks, Nevada:

Amsoil 10W30 Dominator Racing Oil synthetic (lab tested 2013)
Silicon = 3 ppm (anti-foaming agent in new oil, but in used oil, certain gasket materials and dirt can also add to this number)
Boron = 15 ppm (detergent/dispersant, anti-deposit buildup/anti-sludge)
Magnesium = 10 ppm (detergent/dispersant, anti-deposit buildup/anti-sludge)
Calcium = 1661 ppm (detergent/dispersant, anti-deposit buildup/anti-sludge)
Barium = 0 ppm (detergent/dispersant, anti-deposit buildup/anti-sludge)
Zinc = 1613 ppm (anti-wear)
Phos = 1394 ppm (anti-wear)
Moly = 0 ppm (anti-wear)
Potassium = 4 ppm (anti-freeze corrosion inhibitor)
Sodium = 0 ppm (anti-freeze corrosion inhibitor)
TBN = 6.5 (Total Base Number) This is an acid neutralizer to prevent corrosion. Most gasoline engine motor oils start with TBN around 8 or 9.
Viscosity (cSt at 100*C) = 11.6 (cSt range for SAE 30 is 9.3 to 12.4) And cSt (centistokes) in general terms, represents an oil’s thickness.

My testing showed that the onset of thermal breakdown for this oil was approximately 300*F, which tied for the highest value I've found in all the oils I've tested for the onset of thermal breakdown. The oils that had an onset of thermal breakdown value that high, have always been Amsoil products, in my testing.

My "Dynamic Wear Testing Under Load", which determines the specific wear protection limit of an oil by testing its "Load Carrying Capacity/Film Strength", found that this oil was capable of producing a very impressive 97,118 psi. This puts it in the OUTSTANDING WEAR PROTECTION category, and makes it one of the best high zinc oils I've tested. Below is how it ranked among the other high zinc (over 1100 ppm) oils I've tested.

Wear protection reference categories are:

*** Over 90,000 psi = OUTSTANDING protection

*** 75,000 to 90,000 psi = GOOD protection

*** 60,000 to 75,000 psi = MODEST protection

*** Below 60,000 psi = UNDESIREABLE

The higher the psi number, the better the wear protection.

1.10W30 Lucas Racing Only synthetic = 106,505 psi
zinc = 2642 ppm
phos = 3489 ppm
ZDDP= 3000 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.

2.10W30 Valvoline NSL (Not Street Legal) Conventional Racing Oil = 103,846 psi
zinc = 1669 ppm
phos = 1518 ppm
ZDDP = 1500 ppm
NOTE: Due to its very low TBN value, this oil is only suitable for short term racing use, and is not suitable for street use.

3.10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phos = 1544 ppm
ZDDP = 1500 ppm

4.10W30 Valvoline VR1 Synthetic Racing Oil, API SL (black bottle) = 101,139 psi
zinc = 1180 ppm
phos = 1112 ppm
ZDDP = 1100 ppm

5.10W30 Amsoil Dominator Racing Oil synthetic = 97,118 psi
zinc = 1613 ppm
phos = 1394 ppm
ZDDP = 1500 ppm

6.30 wt Red Line Race Oil synthetic = 96,470 psi
zinc = 2207 ppm
phos = 2052 ppm
ZDDP = 2100 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.

7.10W30 Amsoil Z-Rod Oil synthetic = 95,360 psi
zinc = 1431 ppm
phos = 1441 ppm
ZDDP = 1400 ppm

8.10W30 Quaker State Defy, API SL semi-synthetic = 90,226 psi
zinc = 1221 ppm
phos = 955 ppm
ZDDP = 1000 ppm

9.10W30 Joe Gibbs HR4 Hotrod Oil synthetic = 86,270 psi
zinc = 1247 ppm
phos = 1137 ppm
ZDDP = 1100 ppm

10.15W40 RED LINE Diesel Oil synthetic, API CJ-4/CI-4 PLUS/CI-4/CF/CH-4/CF-4/SM/SL/SH/EO-O = 85,663 psi
zinc = 1615 ppm
phos = 1551 ppm
ZDDP = 1500 ppm

11.5W30 Lucas API SM synthetic = 76,584 psi
zinc = 1134 ppm
phos = 666 ppm
ZDDP = 900 ppm

12.5W50 Castrol Edge with Syntec API SN, synthetic, formerly Castrol Syntec, black bottle = 75,409 psi
zinc = 1252 ppm
phos = 1197 ppm
ZDDP = 1200 ppm

13.5W30 Royal Purple XPR (Extreme Performance Racing) synthetic = 74,860 psi
zinc = 1421 ppm
phos = 1338 ppm
ZDDP = 1300 ppm

14.5W40 MOBIL 1 TURBO DIESEL TRUCK synthetic, API CJ-4, CI-4 Plus, CI-4, CH-4 and ACEA E7 = 74,312 psi
zinc = 1211 ppm
phos = 1168 ppm
ZDDP = 1100 ppm

15.15W40 CHEVRON DELO 400LE Diesel Oil, conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM, = 73,520 psi
zinc = 1519 ppm
phos = 1139 ppm
ZDDP = 1300 ppm

16.15W40 MOBIL DELVAC 1300 SUPER Diesel Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4/SM, SL = 73,300 psi
zinc = 1297 ppm
phos = 1944 ppm
ZDDP = 1600 ppm

17.15W40 Farm Rated Heavy Duty Performance Diesel, CI-4, CH-4, CG-4, CF/SL, SJ (conventional) = 73,176 psi
zinc = 1325ppm
phos = 1234 ppm
ZDDP = 1200 ppm

18.15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
zinc = 1454 ppm
phos = 1062 ppm
ZDDP = 1200 ppm
Yes it true, this new Rotella does in fact have more zinc than the old Rotella.

19.0W30 Brad Penn, Penn Grade 1 (semi-synthetic) = 71,377 psi
zinc = 1621 ppm
phos = 1437 ppm
ZDDP = 1500 ppm

20.15W40 “OLD” SHELL ROTELLA T Diesel Oil conventional, API CI-4 PLUS, CI-4, CH-4,CG-4,CF-4,CF,SL, SJ, SH = 71,214 psi
zinc = 1171 ppm
phos = 1186 ppm
ZDDP = 1100 ppm

21.10W30 Brad Penn, Penn Grade 1 (semi-synthetic) = 71,206 psi
zinc = 1557 ppm
phos = 1651 ppm
ZDDP = 1600 ppm

22.15W50 Mobil 1, API SN synthetic = 70,235 psi
zinc = 1133 ppm
phos = 1,168 ppm
ZDDP = 1100 ppm

23.30wt Edelbrock Break-In Oil conventional = 69,160 psi
zinc = 1545 ppm
phos = 1465 ppm
ZDDP = 1500 ppm

24.10W40 Edelbrock synthetic = 68,603 psi
zinc = 1193 ppm
phos = 1146 ppm
ZDDP = 1100 ppm

25.15W40 LUCAS MAGNUM Diesel Oil, conventional, API CI-4,CH-4, CG-4, CF-4, CF/SL = 66,476 psi
zinc = 1441 ppm
phos = 1234 ppm
ZDDP = 1300 ppm

26.10W30 Royal Purple HPS (High Performance Street) synthetic = 66,211 psi
zinc = 1774 ppm
phos = 1347 ppm
ZDDP = 1500 ppm

27.10W40 Valvoline 4 Stroke Motorcycle Oil conventional, API SJ = 65,553 psi
zinc = 1154 ppm
phos = 1075 ppm
ZDDP = 1100 ppm

28.5W30 Klotz Estorlin Racing Oil, API SL synthetic = 64,175 psi
zinc = 1765 ppm
phos = 2468 ppm
ZDDP = 2100 ppm

29.“ZDDPlus” added to Royal Purple 20W50, API SN, synthetic = 63,595 psi
zinc = 2436 ppm (up 1848 ppm)
phos = 2053 ppm (up 1356 ppm)
ZDDP = 2200 ppm
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 24% LOWER than this oil had BEFORE the ZDDPlus was added to it. Most major Oil Companies say to NEVER add anything to their oils, because adding anything will upset the carefully balanced additive package, and ruin the oil’s chemical composition. And that is precisely what we see here. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

30.Royal Purple 10W30 Break-In Oil conventional = 62,931 psi
zinc = 1170 ppm
phos = 1039 ppm
ZDDP = 1100 ppm

31.10W30 Lucas Hot Rod & Classic Hi-Performance Oil, conventional = 62,538 psi
zinc = 2116 ppm
phos = 1855 ppm
ZDDP = 1900 ppm

32.10W30 Comp Cams Muscle Car & Street Rod Oil, synthetic blend = 60,413 psi
zinc = 1673 ppm
phos = 1114 ppm
ZDDP = 1300 ppm

33.10W40 Torco TR-1 Racing Oil with MPZ conventional = 59,905 psi
zinc = 1456 ppm
phos = 1150 ppm
ZDDP = 1300 ppm

34.“ZDDPlus” added to O’Reilly (house brand) 5W30, API SN, conventional = 56,728 psi
zinc = 2711 ppm (up 1848 ppm)
phos = 2172 ppm (up 1356 ppm)
ZDDP = 2400 ppm
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 38% LOWER than this oil had BEFORE the ZDDPlus was added to it. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

35.10W40 Summit Racing Premium Racing Oil, API SL conventional = 59,483 psi
zinc = 1764 ppm
phos = 1974 ppm
Claimed ZDDP level on the bottle = 1800 ppm
NOTE: Summit discontinued this line of oil, as of spring of 2013.

36.“ZDDPlus” added to Motorcraft 5W30, API SN, synthetic = 56,243 psi
zinc = 2955 ppm (up 1848 ppm)
phos = 2114 ppm (up 1356 ppm)
ZDDP = 2500 ppm
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 12% LOWER than this oil had BEFORE the ZDDPlus was added to it. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

37.“Edelbrock Zinc Additive” added to Royal Purple 5W30, API SN, synthetic = 54,044 psi
zinc = 1515 ppm (up 573 ppm)
phos = 1334 ppm (up 517 ppm)
ZDDP = 1400 ppm
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was a whopping 36% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

38.10W30 Comp Cams Break-In Oil conventional = 51,749 psi
zinc = 3004 ppm
phos = 2613 ppm
ZDDP = 2800 ppm

39.“Edelbrock Zinc Additive” added to Lucas 5W30, API SN, conventional = 51,545 psi
zinc = 1565 ppm (up 573 ppm)
phos = 1277 ppm (up 517 ppm)
ZDDP = 1400 ppm
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was a “breath taking” 44% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

40.“Edelbrock Zinc Additive” added to Motorcraft 5W30, API SN, synthetic = 50,202 psi
zinc = 1680 ppm (up 573 ppm)
phos = 1275 ppm (up 517 ppm)
ZDDP = 1400 ppm
The amount of Edelbrock Zinc Additive added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 22% LOWER than this oil had BEFORE the Edelbrock Zinc Additive was added to it. Adding Edelbrock Zinc Additive SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised. Buyer beware.

41.30wt Lucas Break-In Oil conventional = 49,455 psi
zinc = 4483 ppm
phos = 3660 ppm
ZDDP = 4000 ppm

What's far more important than this 41 high zinc oil ranking list, is the entire 97 oil ranking that you can see, along with additional motor oil tech info at:

http://540ratblog.wordpress.com/

And here are some trends that you will see in that entire 97 oil ranking list:

• Synthetic oils rank between number 1 and number 96.

• Conventional oils rank between number 6 and number 97.

• Since the ranking of synthetic oils and conventional oils completely overlap, there is no clear distinction between their wear protection capabilities.

• High zinc oils rank between number 3 and number 97, which very clearly shows that simply having a high level of zinc is no guarantee of superior wear protection.

• Low zinc oils rank between number 1 and number 74.

• Since the low zinc oils and the high zinc oils completely overlap, you can see that zinc does not play the primary role in determining an oil’s wear protection capability. An oil’s wear protection capability is determined by its base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which contains the extreme pressure components. And modern alternate extreme pressure components are equal to, or better than zinc.

• Diesel oils rank between number 43 and number 78. The poor performance of these Diesel oils makes it very clear that they are a poor choice for High Performance gas engines.

• Break-In oils rank between number 73 and number 97. If you are looking for wear protection during break-in, you will be disappointed with these oils. Because they are NOT formulated to prevent wear, they are formulated to allow the parts to quickly “wear in”, which is totally unnecessary. You cannot stop parts from wearing-in on their own, no matter what oil you run. And we’ve seen that for many years with factory filled synthetic Mobil 1 in countless thousands of brand new factory vehicles, that always break-in just fine. That makes break-in oils little more than snake oil. Buyer beware.

• 20 wt oils rank between number 12 and 90.

• 30 wt oils rank between number 1 and 97.

• 40 wt oils rank between number 43 and 89.

• 50 wt oils rank between number 7 and 82.

So, as you can see, oil viscosity plays no particular role in an oil’s wear protection capability. As mentioned above, an oil’s wear protection capability is determined by its base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which contains the extreme pressure components.

540 RAT

Member SAE (Society of Automotive Engineers)

FAQs

What ratio should I use for Amsoil Dominator? ›

In pre-mix applications, DOMINATOR delivers outstanding protection at 50:1 (2.6 oz. oil per U.S. gallon of gas), although many racers modify the mix ratio to suit their setup.

Is Amsoil Dominator a full synthetic? ›

AMSOIL FULL SYNTHETIC Dominator 2-Cycle Oil 1 Quart.

What does racing oil contain high amounts of? ›

Driven Racing Oil contains all of the correct additives, like Zinc, Phosphorus and Sulfur in addition to the highest quality base oils to protect your engine.

Can you use Amsoil Dominator 2 stroke oil? ›

If you own a racing or modified sled, use AMSOIL DOMINATOR Synthetic 2-Stroke Racing Oil. DOMINATOR is formulated with heavier base oils to protect bearings, pistons and other components from the rigors of high-performance racing and riding.

How does AMSOIL compared to Mobil 1? ›

Mobil 1. Again, AMSOIL comes out on top, fighting volatility 38% better than Mobil 1. And in TBN testing, AMSOIL delivered 28% more acid-neutralizing power than Mobil 1, to help your engine stay cleaner, longer.

Does AMSOIL increase HP? ›

Our fuel mileage with the AMSOIL product increased by 0.9 mpg…and the performance numbers were up as well. Peak torque was up 2.6 lb-ft and peak horsepower was up 4.4 hp.” The article goes on to say that “AMSOIL products are far superior to mineral oils in nearly every quantifiable category.”

How many miles is AMSOIL synthetic good for? ›

Signature Series Synthetic Motor Oil

Normal Service – Up to 25,000 miles (40,200 km), 700 hours of operation or one year, whichever comes first, in personal vehicles not operating under severe service. Severe Service – Up to 15,000 miles (24,140 km), 700 hours of operation or one year, whichever comes first.

Does AMSOIL have Dexos? ›

AMSOIL synthetic motor oils meet or exceed the latest industry standards, including ILSAC GF-6, API SP, GM dexos1 Gen 2 and Gen 3, and dexos R. You can safely use our synthetic motor oils in engines that call for any of these specifications.

Who makes AMSOIL synthetic oil? ›

Alan Amatuzio

Should I use racing oil in my daily driver? ›

It's best to leave racing oil to competition engines and use a properly formulated passenger car motor oil for your daily vehicle. To find the right oil for your vehicle, use the AMSOIL Product Guide.

Does racing oil make a difference? ›

Racing oil contains three times more antiwear and friction reducing additives (for less wear and more horsepower) than ordinary oil.

Is racing oil good for daily driving? ›

Well, the joke's on them, because racing oil isn't meant for daily or even occasional driving. In fact, running racing oil in a non-track vehicle can increase the likelihood of sludge buildup in the engine. And, it can damage the $1,200 catalytic converter.

Is AMSOIL Dominator better than Interceptor? ›

The main difference between the Dominator Racing Oil and the Interceptor oil is how you plan to use the engine. If you're not going 100% most of the time the engine is running, the Interceptor oil will be the better choice. It's best to use at idle and anything less than 100% wide open throttle.

Is it safe to mix AMSOIL and Mobil 1? ›

So, can you mix AMSOIL with other oil? The short answer is: “Yes, you can.

Is AMSOIL snake oil? ›

Is AMSOIL Snake Oil. No, it is not “snake oil”. AMSOIL Synthetic Motor Oils are premium, 100% full synthetic motor oils. They are designed for every day use and tested in extreme race environments.

What's better AMSOIL or redline? ›

The testing revealed that Amsoil flows faster than Redline. Therefore, Amsoil is a lighter oil than Redline. Also, the engine operates smoothly and efficiently with thinner oil since it moves through the system more quickly. Flow rates in Amsoil don't drop much even when temperatures outside are low.

Which AMSOIL is best for high mileage cars? ›

AMSOIL XL Synthetic Motor Oil is perfect for these situations, using higher quality additives than the competitors like Mobil 1 high mileage and Pennzoil high mileage oils. In fact, AMSOIL XL Synthetic oil with boosted additives ranks at the top of the class.

What is the best motor oil on the market? ›

Comparison of the best engine oils for 2022
Engine oil name
Best engine oil overallMobil 1 Extended Performance
Best engine oil overall runner-upCastrol GTX Magnatec
Best synthetic engine oilPennzoil Ultra Platinum Full Synthetic
Best synthetic engine oil runner-upAmsoil Signature Series Synthetic
6 more rows
Aug 31, 2022

Does AMSOIL remove sludge? ›

AMSOIL Cleaning Agent is non-solvent-based and assists in cleaning gearboxes of sludge, varnish or additive fallout caused by previously used gear oils.

Who makes the best race oil? ›

AMSOIL DOMINATOR® Synthetic 10W-30 Racing Oil (RD30) provides superior performance and maximum protection in high-performance and racing applications. DOMINATOR is engineered from advanced synthetic technology to better withstand the elevated rpm, high temperatures and shock-loading common to racing applications.

Does AMSOIL clean sludge? ›

AMSOIL Engine & Transmission Flush helps to remove sludge and deposits from engines and transmissions.

Why is AMSOIL not sold in stores? ›

Availability at service delivery centers:

AMSOIL Inc. believes that AMSOIL products should be available at local service centers that offer other value added services such as repair and installation of car parts. This is the main reason why you may not find AMSOIL on the shelves of chain stores.

What grade of oil is AMSOIL? ›

Signature Series 0W-40 Synthetic Motor Oil

Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.

What are the different grades of AMSOIL? ›

– AMSOIL makes 3 levels of products: Signature Series, XL and OE. Each product line has a different price point due to the quality of the additives and the customer market it is designed for. AMSOIL's XL and OE product lines cost the same as common brands found on the shelves of mass marketed parts stores.

What is a good alternative to AMSOIL? ›

AMSOIL's competitors and similar companies include Afton Chemical, Nye Lubricants, BP Lubricants USA and Chevron Oronite.

Is AMSOIL better than regular oil? ›

AMSOIL keeps engines 81% cleaner (5 times cleaner) than conventional oil by better resisting the formation of deposits (supported by TEOST 33C test [ASTM D6335]).

Why does GM recommend Dexos oil? ›

Dexos oil is engine oil that meets a special set of requirements. Oils with Dexos specification meet the most stringent specifications that will help your vehicle meet the latest emissions standards and improve fuel efficiency.

What is special about AMSOIL? ›

AMSOIL synthetic lubricants deliver wear protection, engine cleanliness and fuel efficiency conventional oils simply can't match. Although you might know that synthetic oils outperform conventional oils, you might not understand why. Our products are put to the test in the lab, on the track and in the streets.

Why is AMSOIL not API certified? ›

Phosphorus Restrictions

Full API licensing, or certification, would impose strict phosphorous limitations on AMSOIL motor oils. This limitation is the main reason most AMSOIL motor oils are not API licensed.

Does AMSOIL contain moly? ›

AMSOIL Synthetic Polymeric Off-Road Grease

Forms a protective barrier against metal-to- metal contact. Fortified with 5 percent moly for maximum wear protection to meet Caterpillar's requirement for pin and bushing applications.

What oil do Nascar engines use? ›

Mobil 1™ is the Official Motor Oil of NASCAR® ExxonMobil and NASCAR have a long-standing partnership, with the Mobil 1™ brand serving as the Official Motor Oil of NASCAR since 2003.

Should you use thicker oil for racing? ›

Thinner oils can flow faster and produce more horsepower. However, thicker, high-viscosity oils may better meet the requirements of race vehicles. Racing engine oils work at extremely high temperatures and carry extreme loads on the bearings.

How long does racing engine oil last for? ›

If you are using a specially high quality grade oil, it can be used up to 15,000 kilometers. The interval also depends on the usage of the car. For example, the engine oil of a racing car usually gets changed immediately after the race is over due to the harsh operating conditions throughout the race.

What grade is racing oil? ›

The most common type of race oil is a 10W-60 viscosity grade based on a Group IV full-synthetic PAO base oil blend.

When should I use racing oil? ›

Use racing oil only for racing.

Synthetic oil meant for normal use is balanced to offer many advantages that a racing oil doesn't provide. If your car or truck needs a 5w30 engine oil, AMSOIL 5w30 synthetic oil offers the balance for cleaner emissions, higher fuel economy, and anti-wear protection.

What oil viscosity is best for racing? ›

A wider viscosity range oil such as a 0W-50 is better suited for all around tspanperature and race performance.

Is Amsoil good for racing? ›

AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications.

What is the best oil for long distance driving? ›

10 Top-Rated Oils and Additives for High-Mileage Vehicles
  • Valvoline High Mileage with MaxLife Technology Synthetic Blend Motor Oil. ...
  • Pennzoil High Mileage Motor Oil. ...
  • Slick 50 Recharged High Mileage Treatment. ...
  • Gumout Fuel System Cleaner. ...
  • Royal Purple High Mileage Synthetic. ...
  • Techron Fuel Cleaner. ...
  • Mobil Super High Mileage Oil.
Dec 16, 2022

Can you mix racing oil with regular oil? ›

regular oil and advising whether mixing motor oil is okay. So, can you mix synthetic oil with regular oil? Yes. If it's something you do only occasionally, mixing shouldn't damage your engine.

Does AMSOIL Dominator have rust inhibitors? ›

AMSOIL Dominator contains hearty anti-rust/corrosion additives, so AMSOIL did their part to protect engines. There absolutely no aspect of the Dominator 2-Cycle formula that can promote rust formation.

Is AMSOIL high in zinc? ›

AMSOIL Z-ROD 10W-30 Synthetic Motor Oil is formulated with high levels of ZDDP to protect flat-tappet cams, lifters, rockers and other areas susceptible to wear. Its high-zinc, high-phosphorus formulation provides the extra wear protection these critical splash-lubricated components require.

Does AMSOIL have a zinc additive? ›

AMSOIL Dominator Synthetic Racing Oil features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection.

Why can't you go back to regular oil after synthetic? ›

This is because synthetic oil has additives that make it more slippery than regular oil, which could lead to leaks in older vehicles.

When should I switch to AMSOIL? ›

If the engine has a sketchy maintenance history and you want to give it a fresh start, we recommend using AMSOIL Engine and Transmission Flush before you switch to synthetic motor oil.

What is the mix ratio for AMSOIL? ›

They are designed for 50:1 mix ratio in 1, 2.5 and 5 gallon gas cans. Alternatively, using half of each bottle will result in a 100:1 mix in the respective cans. Each pre-mix two-stroke application carries its own mix-ratio specification.

Is AMSOIL made in USA? ›

AMSOIL synthetic lubricants are made in the USA using global components. Developing innovative products and manufacturing to high quality standards have become our industry trademark and continue to drive worldwide demand.

Is Royal Purple really better? ›

Because of the advanced, proprietary Synerlec® additive technology, Royal Purple synthetic oils containing Synerlec outperform any other lubricant, including other premium synthetic oils. Synerlec additive technology increases the oil film strength to 3 – 4 times that of any oil of comparable viscosity.

Who uses AMSOIL? ›

AMSOIL synthetic lubricants are validated in long-range studies with taxicabs, delivery fleets, police and emergency vehicles, over-the-road trucks, wind turbines and industrial machinery.

What is the ratio for AMSOIL 2 stroke? ›

Most modern chainsaws, string trimmers, leaf blowers and other small-engine two-stroke equipment recommend a 50:1 oil mix ratio, but some recommend 40:1 and older two-stroke equipment might even call for 32:1.

What is the correct fuel oil mixture ratio? ›

Common gasoline and oil mix ratios are 50:1 and 40:1. Meaning there is 50/40 parts gasoline to one part oil when mixed. The lower the mix ratio number the more oil per volume in the gasoline. To mix properly add oil to your gas can, then add fresh gasoline from the pump.

What is the best fuel mix ratio? ›

If you stick to high-quality lubricants, MXA recommends anywhere between 24:1 and 32:1 ratios for 125 and under bikes. You can run 32:1 to 50:1 ratios in your 250 and Open engines. What about oils that claim a 100:1 ratio? That ratio is not based on reality.

What oil can I mix with AMSOIL? ›

Signature Series and OE Synthetic Motor Oil share a similar base chemistry, and formulations of the same viscosity can be safely mixed.

Does AMSOIL improve performance? ›

First, AMSOIL P.i. removes stubborn deposits, improving fuel mileage up to 5.7%. ¹ Use it every 4,000 miles (6,400 km) for best performance. AMSOIL P.i. restores fuel injector flow rate in gasoline-direct-injection (GDI) engines, making it one of the best fuel injector cleaners available.

How long can I go in between oil changes with AMSOIL? ›

Normal Service – Up to 25,000 miles (40,200 km), 700 hours of operation or one year, whichever comes first, in personal vehicles not operating under severe service. Severe Service – Up to 15,000 miles (24,140 km), 700 hours of operation or one year, whichever comes first.

What happens if you mix too much oil in a 2-stroke? ›

What happens if the mixing ratios in a 2 stroke engine are incorrect? If you put too much oil, it can generate additional carbon build-up, making it difficult to start the engine, blow excessive smoke which is particularly bad for the environment and may (with time) cause the engine to stop operating correctly.

What is the perfect 2-stroke mix? ›

What is the ratio for 2-stroke fuel mix?
50:1 ratioPetrolOil
For 1 litreMix 1 litre of petrolwith 20ml of oil
For 2 litresMix 2 litres of petrolwith 40ml of oil
For 3 litresMix 3 litres of petrolwith 60ml of oil
For 4 litresMix 4 litres of petrolwith 80ml of oil
3 more rows
Jan 18, 2023

What is the 50 to 1 ratio? ›

You want to mix 2.6 ounces of oil to one gallon of gasoline for a 50:1 mixture. If you're mixing up two gallons of gasoline you will have to mix 5.2 ounces of oil to two gallons of gasoline for a 50:1 mixture.

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