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Flieger Flieger is offline
Max Sluiter
 
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Join Date: Mar 2006
Location: So Cal
Posts: 19,577
Garage
According the THE OIL THREAD Castrol GTX has been reformulated with much less Zinc and Phosphorous. The high levels of Calcium detergents also impede the effect of the zinc and phosphorous to form ZDDP.

I move that we transfer this discussion to the big oil thread to avoid repeating a long discussion.
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911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 09-04-2008, 04:29 PM
  Pelican Parts Technical Article Directory    Reply With Quote #19 (permalink)