08-20-2007, 08:31 AM
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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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Quote:
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Originally Posted by rdorman
The new formulation of Rotella T 15W-40 that meets the CJ-4 spec contains 1210 ppm zinc, the max allowed for CJ-4. If I recall correctly, it used to be about 1400. 1210 is plenty.
http://www.machinerylubrication.com/...up=Lubrication
It is my understanding the companies like Crane and Comp Cams have changed hardening processes in respoonse to lower phospated ash/zddp. |
that's good news from the cam manufacturers. Do you have a web page, or other source available for posting, so we can get the whole story?
thanks,
Z. Ray
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'65 K code Mustang
'66 Galaxie 500
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