quote:Originally posted by crimsontide:
which oil has the most zddp???
Currently in PCMO's
Synergyn " both 30wts and the 15w-50 "
Citgo 10w-30 Ultra Life dino
all over 1400 ppm
Castrol Syntec 10w-40 comes in right at 1300 ppm
If your speaking of OTC oils only
Citgo Ultra Life
Mystik Gasoline Formula 5w-30
all over 1200 ppm for now
The question might be what oils have the lowest zinc/phos
Pennzoil yellow bottle
Valvoline All Climate
and on and on