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Old 07-22-2011   #2
secondchance
 
Join Date: Aug 2006
Location: McLean, VA
Posts: 3,723
Default Re: Rizlone ZDDP additive

I have been adding 1/2 a bottle of ZDDP w/ each oil change. I did a quick calculation and determined 1/2 bottle w/ whatever level of zincphosphate present in current Mobil 1 formulation would bring the total to about 1200 ppm.
Ofcourse, I have no idea as to what is really in ZDDP... Only could go by what they claim.
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