07-28-2010, 06:27 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Quote:
Originally Posted by madmaxx
It is a slippery slope as to weather a hydraulic roller needs the extra zinc and phosphorous when it comes to performance engines. I wouldn't be concerned about your lexus ls 460 but a stroked small block or a flat tappet, I would have to error on the cautious side and get the zinc/phosphorous either by the oem or supplement.
Additives are consumed over time so theoretically an 800 ppm new oil may be the same as a 1200 ppm after 4K miles.
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Although the primary need is for the face of the lifters on a flat tappet cam, there is also data out there relative to ZDDP benefits in high performance engines where it minimizes scuffing on the piston skirts. I run it in my sons supercharged 03 Cobra Mustang.
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Last edited by CobraEd; 07-28-2010 at 06:38 PM..
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