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"Gene Kearns" wrote in message news  On 09 Oct 2004 23:34:23 GMT, (JAXAshby) wrote: btw, race engine builders still use high price oil and still feel the money is well-spent even if you still don't understand why. Why don't you address the issue. Why do they chose a single weight oil over multi-viscosity oil? My experience with race car crews (including the guys that build the engines) is that they do a LOT of things based on folk lore and "that's just the way it's done". Don't try looking for a lot of logic from racers, they are more into superstition than science. That said, racing presents an entirely different environment for the oil than recreational or regular automotive. They aren't likely to get 3000 miles on an engine, so they aren't likely to care what the long term durability of the oil is. What they do care about is how the oil reacts in high RPM situations. A "racing" oil is formulated to reduce foaming, which can be a critical issue on a high performance engine. You don't want to run that in your car or boat, however, unless you intend to change your oil on a weekly basis. Rod |
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