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Old 01-25-2013, 09:33 AM   #27
TINK OP
Studly Adventurer
 
Joined: Nov 2007
Location: So Cal
Oddometer: 628
SG enough ZDDP

Quote:
Originally Posted by photomd View Post
Doesn't SG rating meet our need for ZDDP by definition?
That's my understanding, but I could be wrong.
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