DOMINATOR® 15W-50 100% Synthetic Racing Oil
DOMINATOR® 15W-50 100% Synthetic Racing Oil
Product Overview
AMSOIL DOMINATOR® 15W-50 Synthetic Racing Oil is specifically designed for racing engines. It provides maximum performance and superior engine protection under extreme racing conditions — including intense heat, extremely high RPMs, and shock-loading — which are all common during competition.
Key Benefits
Maximum Engine Wear Protection
Racing engines are typically modified to deliver significantly higher horsepower and speeds than standard engines. These modifications result in increased shear forces, which can cause oil viscosity to break down. Viscosity loss can lead to increased wear on bearings, cylinders, and other critical engine components.
AMSOIL DOMINATOR® 15W-50 is engineered to resist viscosity breakdown caused by shear. Its durable oil film continues to protect under extreme stress. The formula is fortified with high levels of zinc and phosphorus anti-wear additives to help guard against scuffing and component wear in racing conditions.
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Left image: Cylinder head with typical carbon buildup; piston rings remain clean and fully operational.
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Right image: After 4,800 km of racing, the camshaft shows virtually no scuffing, scratches, or wear.
Maximum Horsepower
AMSOIL DOMINATOR® 15W-50 is friction-modified to reduce drag inside the engine, enabling maximum horsepower output while simultaneously lowering engine temperatures. Unlike conventional oils, this specialized formula is built to handle extended high-RPM racing intervals and helps extend the life of high-performance engine parts.
Applications
AMSOIL DOMINATOR® 15W-50 is suitable for all types of racing, including circuit racing, rally, off-road, and powerboat competition. It is ideal for engines that require a high-viscosity SAE 50-grade oil.
Specifications
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TYPICAL TECHNICAL PROPERTIES
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AMSOIL DOMINATOR® Synthetic Racing Oil (RD50)
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| Kinematic Viscosity @ 100°C, cSt (ASTM D445) |
18.0
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| Kinematic Viscosity @ 40°C, cSt (ASTM D445) |
126.3
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| Viscosity Index (ASTM D2270) |
158
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| CCS Viscosity, cP @ (°C) (ASTM D5293) |
6587 (-20)
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| Pour Point °C (°F) (ASTM D97) |
-38 (-36)
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| Flash Point ºC (ºF) (ASTM D92) |
238 (460)
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| Fire Point ºC (ºF) (ASTM D92) |
250 (482)
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| Four-Ball Wear Test (ASTM D4172 @ 40 kg, 150ºC, 1800 rpm, 1 hr), Scar, mm |
0.38
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| Total Base Number |
8.0
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| High-Temperature/High-Shear Viscosity 150ºC, 1.4 x 106 s-1, cP (ASTM D5481) |
5.7
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