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also, you CAN get race gas... (archive)

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Posted by dp on August 02, 2000 at 21:33:03:

In Reply to: That's a brand name of an additive. (nt) posted by Roy on August 02, 2000 at 18:51:19:

many race parts suppliers carry various grades of unleaded race gas. there are also a few (VERY few) gas stations, typically Union 76, that sell race gas as well. it's pricey - $5/gal for 104 unleaded. there is little point in putting that in a stock engine. while the engine management system might take advantage of a couple extra octane points, adding 10 is overkill and won't make any difference. you'd need to raise compression and/or run forced induction to benefit from actual 104 octane.

there are differences in additive packages different brands use, and even gasoline from the same company in different states may be noticeably different. in some eastern states sunoco sells 94 octane, which is probably the highest that a stock engine could benefit from (just guessing here). in the west, i've personally found that the M Coupe seems to like chevron premium the best - but that is only an extremely unscientific, subjective opinion, not based on any hard facts.


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