Why did AMSOIL apply the Dominator® name used on AMSOIL Dominator®
2-cycle Oil to the new crankcase Amsoil racing oils?
The Dominator® name is widely recognized and
synonymous with outstanding performance in two cycle applications.
It is a natural fit that the name is extended to the new racing
Why is AMSOIL Series 2000 20W-50 Racing Oil (TRO) being discontinued?
TRO is being discontinued with the introduction
of RD50. This new formulation more effectively targets the updated
needs of racers. It provides the high level of engine protection
and power these racers desire.
Can these oils be used in hot rods?
Yes, absolutely. These oils are formulated with
high levels of zinc and phosphorus to protect flat tappet cams
found in hot rods.
Who are typical users of the racing oils?
The three new racing motor oils have been formulated
for a wide range of racing and street performance applications,
including high rpm/high horsepower, turbo/supercharged, gasoline,
alcohol burning and nitrous oxide injected engines. In addition,
because of the higher viscosity, RD50 is applicable for nitro-fueled
applications. The racing oils are also ideal for street rods,
hot rods, classic cars, muscle cars and other high performance
domestic and import vehicles.
What is the warranty coverage on the new racing oils?
AMSOIL INC warrants all of its products against
defects in workmanship, regardless of their use. While the inherent
properties of AMSOIL products make them well suited for racing,
factors outside of AMSOIL control make it impossible to offer
any additional warranty on products used for racing. These factors
include vehicle modifications, operating conditions beyond those
for which the OEM designed, specialty fuels,and others- all
of which can place extreme stresses on an engine. Since AMSOIL
cannot predict the factors which may come into play under specific
racing conditions or equipment designs, it is unable to guarantee
specific equipment performance or longevity.
Amsoil can and does guarantee that products will be free
of defects. Customers that feel there may be some defect in
an AMSOIL lubricant may submit a sample of the lubricant for
analysis at no charge. If the product is defective, the Amsoil
How is the correct oil viscosity for a specific application
Customers should refer to their owners manual
or consult their engine builder for the correct oil viscosity.
They may also email us or contact Amsoil Tech Services for guidance.
Can the racing oils be used for extended drain intervals?
Amsoil does not recommend extended drain interval
for the Dominator® Racing Oils. Follow OEM recommendations for
What is the difference between Dominator® 10W-30 (RD30) and
the AMSOIL 10W-30 (ATM)?
The Amsoil racing oils are uniquely formulated
for the high RPMs, high temperatures and shock loading conditions
encountered in racing and other high performance applications.
What are the API specifications for racing oils and why aren’t
API specifications are not applicable to racing
These racing oils contain friction modifiers. Are they suitable
The racing oils are not wet-clutch compatible
and are not recommended for use in motorcycles.
Why was RD50 formulated as a 15W-50 and not a 20W-50?
The advanced chemistry of the Dominator® Series
allows for the formulation of a 15W-50, which provides better
protection for engines during cold starts. Additionally, it
provides less drag when the engine oil temperature is not up
to stable operating temperatures.
Do these oils have Zinc and Phosphorus in them, and are they
going to protect my flat tappet?
The Dominator® Racing Oils are formulated with
high levels of both zinc and phosphorus and will provide superior
protection for flat tappet cams and high-tension valve springs.
Are these oils compatible with other racing oils?
AMSOIL Dominator® Oils are compatible with other
oils; however, intentionally mixing oils is not recommended;
particularly in racing applications. Oil left over from oil
changes does not pose a problem.
Why is AMSOIL Series 2000 20W-50 Racing Oil (TRO) being discontinued
Test result of 0.43 while RD50 is listed at 0.47?
Both TRO and RD50 reflect outstanding Four-Ball
results, and each clearly demonstrates superior wear protection
when compared to the competition. The difference in the Four-Ball
scores does not represent the additional performance gained
with RD50. While TRO was an excellent oil, RD50 is formulated
with chemistry engineered for better overall performance in
today’s high performance engines and racing applications. With
the addition of a new proprietary friction modifier, RD50 helps
deliver more power to provide racers with an extra competitive
Why is the Total Base Number (TBN) lower in racing oils?
Since racing oils are not intended for extended
drain intervals, there is no need for high detergent levels.
Why are some applications listed on two or three of the racing
: All three oils are formulated with the same
robust additive package and have superior shear stability, providing
straight grade protection in a multi-viscosity oil. The applications
listed for each product are based on the predominant engine
design and race application for that viscosity grade. Ultimate
selection of race oils should be done in conjunction with the
engine builder taking into account bearing clearances and racing
application. Engines are highly modified and specifics vary
in the racing industry. Dropping down a viscosity level will
generally deliver more power if engine design and application
What are the benefits of having a 100% Synthetic racing oil?
AMSOIL Dominator® Oils are built with a uniform
molecular structure that reduces fluid friction. Lower friction,
decreases temperatures and improves engine efficiency and power.
Additionally AMSOIL Dominator® Oils can withstand extreme heat,
pressure and mechanical abuse. They are very durable and deliver
outstanding engine protection.
What is going to happen to AMSOIL Super Heavy Weight SAE 60
Racing Oil (AHR)? Is that also going to join the Dominator®
AMSOIL has recognized the need for a heavy viscosity
drag racing oil and will be studying this category to see whether
there is an opportunity to provide another unique AMSOIL solution.
AMSOIL Dominator Synthetic 2-Cycle Racing Oil
a solid reputation for providing maximum power output and protection
in two-cycle racing and high-performance applications. The name
recognition, reputation and superior performance of Dominator
Synthetic 2-Cycle Racing Oil is so widespread that AMSOIL adopted
the Dominator name for its new line of racing oils. New Dominator
Synthetic 5W-20, 10W-30 and 15W-50 Racing Oils are specially
formulated to provide superior performance and maximum protection
in high-performance and racing applications.
Three Viscosities, One Additive Package - Amsoil racing
Racing and high-performance engines subject motor oil to elevated
RPM, high temperatures and shock-loading. AMSOIL Dominator Synthetic
Racing Oils were developed to address these extreme conditions
and provide high-quality AMSOIL performance and protection for
a variety of racing and high-performance applications. All three
Dominator Racing Oils feature the same additive package, providing
maximum durability in multiple viscosities. Their shear-stable
formulation was engineered to provide maximum horsepower without
sacrificing engine protection. Dominator Racing Oils provide
straight-grade protection in a multi-grade formulation.
Maximum Durability, Maximum Wear Protection
AMSOIL Dominator Synthetic Racing Oils feature an additive package
heavily fortified with zinc and phosphorus for superior long-term
wear protection. Designed for maximum durability, the shear-stable
formulation ensures critical engine components are protected
from the start of the race to the checkered flag. The superior
additive technology of Dominator Synthetic Racing Oils provides
unmatched durability in extreme conditions.
The proprietary friction modifier of Dominator Synthetic Racing
Oils provides reduced friction for maximum power and cooler
engine temperatures, resulting in improved lap times and longer-lasting
Protection from Startup to the Checkered Flag
The multi-viscosity designs of Dominator Synthetic Racing Oils
deliver maximum protection in temperature extremes. Dominator
Racing Oils offer excellent cold-start protection and maintain
superior film strength during high-temperature operation on
Superior-Quality Oils, No Discrimination Amsoil Racing
Many oil companies produce specialty racing oils for elite groups
and do not offer them to the general public. For instance, several
popular oil manufacturers produce racing oils offered only to
NASCAR racers. AMSOIL receives inquiries as to why the company
does not offer “special,” higher-quality or NASCAR oils. The
answer is all AMSOIL synthetic motor oils are already formulated
to a higher level than competitors’ oils, and AMSOIL Dominator
Synthetic Racing Oils are no exception. They provide maximum
performance and superior protection for all high-performance
racing and street applications. The same AMSOIL Dominator Synthetic
Racing Oils that are used in the engines of AMSOIL corporately-sponsored
racers, including Scott Douglas and Mike Oberg, are available