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I spoke to Ken at American Refining last month, posted the info on Rennlist...
>>Just got this from Ken at American Refining today:
Zinc: 1200 ppm (.12%)
Phosphorus: 1100 ppm (.11%)<<
From Havoline:
Havoline (SL rated, Zn: .103% P: .094%), FWIW.
Royal Purple won't disclose either.
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Fred Hurder Jr
For Tech Questions:
'84 911 Carrera Cabriolet (US)
Weltmeister Chip, Fabspeed Euro Pre-Muffler, M&K 1-in / 1-out Muffler
22 ERP /29 Sander Hollow T-Bars, Bilstein HD Struts / Sport Shocks
ERP Poly-Bronze Bearings (A-Arms & Spring Plates), Stock Swaybars
Turbo Tie Rods, '92 C2 5-Spoke wheels w/ 1" adapters, Drilled Zimmermans
Yes, I drive mine as much as possible. If it's >32° & sunny, I've got the top down. 
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