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Brad Penn Oil and the ZDDP Debate Brad Penn Oil and the ZDDP Debate
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  #36 (permalink)  
Old 08-05-2010, 08:36 PM
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Here's the content of ZDDP and Phos. in Amsoil:

AMSOIL Synthetic Motor Oils Phosphorus Zinc Level
Level (ppm) (ppm)
AMO 10W-40 Synthetic
Premium Protection Motor Oil 1265 1378

ARO 20W-50 Synthetic
Premium Protection Motor Oil 1266 1379

HDD Series 3000 Synthetic
5W-30 Heavy Duty Diesel Oil 1266 1379

AME 15W-40 Synthetic Heavy
Duty Diesel and Marine Motor Oil 1267 1377


AMSOIL Synthetic Racing Oils Phosphorus Zinc Level
Level (ppm) (ppm)
RD20 Dominator Synthetic
Racing Oil 5W-20 1424 1575

RD30 Dominator Synthetic
Racing Oil 10W-30 1424 1575

RD50 Dominator Synthetic

Racing Oil 15W-50 1424 1575
AHR SAE 60 Synthetic Super

Heavy Weight Racing Oil 1265

How does that compare to the oils mentioned earlier in this thread?
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