robs ss
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- Aug 16, 2016
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When I use this Penrite selector tool it recommends Penrite Enduro 25W-70 (Mineral) which apparently has 1760ppm Zinc and 1600ppm Phosphorus.
Hobot's advice in reply #2 is...
Too much or not enough Zn+P gives similar effects, more wear and corrosion. Around 1200 ppm of each is what to look for.
I looked at a number of other oils and I would have chosen something like their MC-4ST Mineral 20W-50 with 1220ppm Zinc and 1100ppm Phosphorus (see analysis of both below)
Any views/experience on which might be better?
Cheers
Rob