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I use toluene every track event. Goes for about $4-8 a gallon at most hardware and paint supply stores. toluene has a octane rating of 114. go here for more info http://www.elektro.com/~audi/audi/toluene.html

Toluene is a great octane booster. I use two gallons on track days. pump gas in my area is 91 w/ two gallons of this and a full tank I get about 94-96. So far I've had no side effects http://performanceolds307.tripod.com/backup/id9.html [ April 23, 2003, 05:35 PM: Message edited by: Remus ]

My engine is a nissan 2.0 turbo (sr20det). I've have this very faint knocking noise, sounds like piston slap. I didn't notice unit I switched over to M1 5w30. It been there for some months and it's not really apparent. So there is no concern. This also happeded on a honda prelude si(h23) I...

Thanx for the input. I'll probably be giving M1 0w40 a try next.

Hi, I was woundering if you guys could give me some input on what would be the ideal oil to run in my car. I have a nissan 2.0 turbo engine(sr20det). Engine has 45k, I've been running 5w30 M1 so far. I usually change the oil at 2000-3000 intervels. The car is also taken to track and autocross...