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

[BobHelt at aol.com]

In a message dated 9/17/2008 4:05:30 PM US Mountain Standard Time,  
rusecular at yahoo.com writes:

The latest API SM standard for car oils calls for a zinc and phosphorus  
content 
less than 0.08% to reduce sulfur, carbon monoxide, and  hydrocarbon 
emissions. 
As a result of this mandate, some motor oils  now have as little as 0.05% 
zinc 
and  phosphorus.



This just not true.  Please see what your own reference is saying as  shown 
below:
 
 
"However, it is worth noting that these new API guidelines do not need  apply 
to "racing," "severe duty," or any motor oils that do not  carry an API 
"starburst" seal or clearly state for off-road-use only. 
 
 
You need to review the actual oil specifications released by the API that  
the producers must meet.
 
Only the ILSAC oils must meet this reduced Phos rating, not the SM oils.  See 
the specifications. ILSAC oils are identified by the starburst. An oil with  
both a Starburst and the SM must meet the ILSAC requirements. An oil without 
the  starburst and just the SM rating has no upper Phos spec requiremnt. Again 
see  the API specs and not someones' intrepretation
Regards,
Bob Helt
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 



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