Running the engine out of oil at the end of the track is worth a solid 5 hundredths. Thats not much for a bracket car or a street car, but for a heads-up or index racing car, its a huge amount.
Thin oil makes horsepower, er I guess I should say thick oil robs horsepower. The hotter it is, the thinner it is. Obviously if it gets too hot it will break down, but even with 2 oil pan heaters I have not found that point.
When NASCAR starts thier qualifying, they heat their oil up to over 320 degrees. By the time they are done, it has cooled off substantially.
Andy
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88 coupe
91 LX NMRA Pure Street 5120
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