<VV> SL or? SM? oil in Corvair....

[BobHelt at aol.com]

In a message dated 9/17/2008 10:53:00 AM US Mountain Standard Time,  
rusecular at yahoo.com writes:

The  current API standard is SM, and calls for 0.06-0.08% Zn and  P.



Sorry, but this is not exactly correct.
 
First the API  specs only specify the amount of Phosphorous, there is  no 
mention of the amount of zinc in any of these specs. Therefore no Zinc  
requirement at all.
 
And the SM spec ACTUALLY has no maximum Phosphorous requirement. This  
reduced Phos is an ILSAC requirement only for oils with the STARBURST.
 
Ler's get our facts correct, please.
Regards,
Bob Helt



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