AMSOIL Dominator® Synthetic 5W-20 Racing Oil (RD20) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 5W-20 Racing Oil delivers superior performance and maximum protection in extreme conditions.
Package sizes include:
1-Quart Bottle
1-Quart Bottles (case of 12)
55-Gallon Drum
AMSOIL Dominator Synthetic 5W-20 Racing Oil is recommended for high-rpm, high-horsepower, turbo/supercharged, gasoline- or alcohol-burning and nitrous oxide gas-injected applications operated under severe conditions.
Applications include, but are not limited to, the following:
• Modified Small Block • Asphalt Late Model • GM Crate Late Model • NHRA Stock Eliminator • Bracket • Midget • Kart • Junior Dragster • Other domestic and import high-performance racing and street applications requiring 20-weight oil. The low-viscosity formulation and robust additive package of Dominator 5W-20 make it ideal for use as a high-strength qualifying oil.
AMSOIL Ea Racing Air Filters (EaAR) are specially designed for racing and street rod enthusiasts who desire AMSOIL Ea protection in carbureted applications. AMSOIL EaAR Air Filters are constructed with the same synthetic nanofiber media as other AMSOIL Ea Air Filters, providing maximum protection and extended filter life.
AMSOIL offers WIX Racing Oil Filters for racing applications. WIX racing filters are specially designed for racing applications only.
OIL ANALYZERS INC., 715-395-0222, is a division of AMSOIL that provides cost-effective, quality oil analysis services. For more information on product applications and service life, refer to the AMSOIL Product Recommendation and Drain Interval Guide (G1490).
AMSOIL Dominator® Synthetic 5W-20 Racing Oil (RD20) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 5W-20 Racing Oil delivers superior performance and maximum protection in extreme conditions. Its shear-stable formulation was engineered to provide maximum horsepower without sacrificing engine protection. Dominator Synthetic 5W-20 Racing Oil provides straight-grade protection in a multi-grade formulation. AMSOIL, the leader in automotive synthetic lubrication, produced the world's first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.
AMSOIL Dominator Synthetic Racing Oil features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection. Designed for maximum durability, it ensures critical engine components are protected for the duration of the race. Dominator Synthetic 5W-20 Racing Oil's superior additive technology provides unmatched durability in extreme conditions. In addition, its light viscosity makes it ideal for high-performance tuner cars and sub-compact vehicles.
Dominator Synthetic Racing Oil's proprietary friction modifier provides reduced friction for maximum power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.
Dominator Synthetic 5W-20 Racing Oil's multi-viscosity design provides maximum protection in temperature extremes. Dominator Racing Oil offers excellent coldstart protection and provides less drag when engine oil has not reached stable operating temperatures. It maintains superior film strength during high-temperature operation on the track.
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. All AMSOIL synthetic motor oils are already formulated to a higher level of performance than competitors' oils, and AMSOIL Dominator Synthetic Racing Oil is no exception. It provides maximum performance and superior protection to all racers, regardless of their level of competition. The same AMSOIL Dominator Synthetic Racing Oil that is used in the engines of AMSOIL corporately-sponsored racers, including Scott Douglas and Brady Smith, are available to everyone.
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Click here to view the MSDS Data Sheet for AMSOIL RD20.
Keep out of the reach of children. Don't pollute. Return used oil to collection centers.
| TYPICAL TECHNICAL PROPERTIES | |
| Dominator® Synthetic5W-20 Racing Oil (RD20) | |
| Kinematic Viscosity @ 100°C, cSt (ASTM D-445) | 9.0 |
| Kinematic Viscosity @ 40°C, cSt (ASTM D-445) | 49.6 |
| Viscosity Index (ASTM D-2270) | 165 |
| CCS Viscosity (°C), cP (ASTM D-5293) | 5695 (-30) |
| Pour Point °C (°F) (ASTM D-97) | -45 (-49) |
| Flash Point °C (°F) (ASTM D-92) | 225 (437) |
| Fire Point °C (°F) (ASTM D-92) | 241 (466) |
| Four Ball Wear Test (ASTM D-4172B: 40 kgf, 150°C, 1800 rpm, 1 hr), Scar, mm | 0.49 |
| Noack Volatility, % weight loss (g/100g) (ASTM D-5800) | 8.0 |
| Shear Stability Kurt Orbahn (ASTM D-6278), % viscosity change 90 cycles. | <3.0 |
| High-Temperature/High-Shear Viscosity, 150ºC, 1.4x106s-1, cP (ASTM D-5481) | 3.0 |
Product Name: Dominator® Synthetic 5W-20 Racing Oil (RD20)
Current Rating: 5out of 5 stars
Votes & Reviews: 14 vote(s) and 15 user reviews.
Reviewed by Bull: 
Great
Reviewed by NFR:
Use in our 602 Crate Sportsman Modified
Reviewed by Fredster1101:
have used Amsoil products for last 20 years in cars, trucks, motorcycles and boats.
I have used the top tier Signature Blend several times for the 25K Mile/1 year change interval and have not experienced any problem with wear or failure OR any excessive use during these change intervals.
I see no reason to use any other fully synthetic product in my vehicles, with having the preferred membership prices available, and the cost of anything else is higher for not as good of product!
Reviewed by john:
I use it in many hot rod cars I work on. good stuff.
Reviewed by mustang65:
very good product, been using it for years
Reviewed by Billy G:
Antique cars such as my 65 Vette needs oil made under different specs than today's cars. Amsoil ZROD is made from specs the manufacture required when these high compression engines were plus it has zinc
Reviewed by Odie:
I have a 2015 Ram 1500. I have used the product after 5k miles and now have 45k miles. I change the oil every 10k because I am overly cautious. I am very pleased with Amsoil so far. It not scientific but the truck "feels like" it has more pep, and the engine is quieter compared to the factory's filled oil.
Reviewed by Tony Bogus:
I'm a Ford fanatic and have built and Worked on 302s, both 351s, 4.6 DOHC and 4.6 PI , 4.6 3 Valve, 5.0s 5.8s 4, Valve as well as FE plus 385 series. I was using Royal Purple until it thinned out in my Coyote ! I just spend too much money along with a lot of time, effort and energy to use oil that going to cause me issues and premature failure! Tony Bogus!!!
Reviewed by Bobby:
Americans have been harnessing and producing horsepower since the early 1900's, so who better to provide quality that protects our investments. I love pushing the envelope of power and Amesoil Company has proven themselves to provide oil and other products that keep me enjoying my rides. And still Making America Great!!
Reviewed by fastblue7:
clean longer,better oil pressure,runs cooler.
Reviewed by James:
Just have my race bike motor rebuilt and i could've used the old bearings they looked immaculate.
Reviewed by Jace:
I bought a 2000 Mustang GT 4.6l with 94,000 miles on it that might not ever have had an oil change. Amsoil brought it back to life and the pony intends to stay with me indefinitely.
Reviewed by Jamie1177:
I run this oil in a 2005 Ran with 35" tires and 6"lift towing a 20' enclosed trailer loaded for racing and actually seen a 2.5 mpg improvement. This engine spends a lot of time above 4K rpm driving up and down mountains.
Reviewed by Jamie:
I run this oil in a 2005 Ran with 35" tires and 6"lift towing a 20' enclosed trailer loaded for racing and actually seen a 2.5 mpg improvement. This engine spends a lot of time above 4K rpm driving up and down mountains.
It's oil!
It lubricates as intended.