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Flieger Flieger is offline
Max Sluiter
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Join Date: Mar 2006
Location: So Cal
Posts: 19,572
Synthetics are good for the higher temperatures of Turbos but only the more expensive racing oils have enough zinc and phosphorous to keep the upper valvetrain protected from severe wear. The racing oils need to be changed more often, though, because most of them do not have the detergents to keep a street engine clean.

Most people follow Charles Navarro of LN Engineering and use 20W50 Brad Penn partial synthetic It is the new name for the old Kendal GT1. It has the best mix of zinc, phosphorous, and cost.

That said, there are better oils (Shell Rotella, I think) but most cost a lot more than the Brad Penn. Motorcyle and Diesel oils are another option but most are not entirely suited to our applications.


and get some Red Bull and a comfortable chair to read the ultimate oil thread:Ultimate Motor Oil Thread or Why we hate CJ4/SM oils
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance

Last edited by Flieger; 09-02-2008 at 09:29 AM..
Old 09-02-2008, 09:19 AM
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