02-04-2011, 02:01 PM
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CC Member
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Join Date: Aug 2007
Location: NE Oklahoma,
OK
Cobra Make, Engine: Fords
Posts: 544
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Not Ranked
Quote:
Originally Posted by CobraEd
Just because an engine has not worn out does not mean that the Mobil 1 in question had the same amount of ZDDP as it did earlier. Keith is correct, Mobil 1 15 - 50 DOES NOT have as much ZDDP as it once did. That is not anyones opinion, that is a fact that Mobil 1 has stated many times............"
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I am not disputing that. I do dispute that their newer formulation has less than than enough zddp to become a hazard to older engines. It currently has 1300ppm zinc and 1300 ppm phosphorus. Still plenty to be protective to flat tappet cam & lifters. I do add Cam Shield when using Mobil 1 0w-40 in the winter.
btw, me having a difference of opinion with Keith does not mean I wouldn't want him to build an engine for me someday. Still dreaming of a Cobra down the line.
Z.
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'65 K code Mustang
'66 Galaxie 500
Last edited by zrayr; 02-04-2011 at 02:03 PM..
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