| Re: [GMCnet] Oil Pressure Poll [message #366649 is a reply to message #366640] |
Thu, 09 September 2021 17:20   |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
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The beauty of true synthetics is they get the muitivis rating often because they behave that way, not because of modifiers. I know the ZDDPlus marketing guy and early on thought it was necessary. I no longer add ANYTHING to oil as most recent research shows it usually degrades the oil by upsetting the chemistry. I have never had a flat cam failure. Only GM cam failure I had was a defective roller cam. The new Hemi guys are plagued with roller cam Fails due to the roller needles failing and Stopped roller eating cam. Lifter foot pressure from big aggressive cams with big springs might require high ZDDP, but I don’t add it to engines with factory cams.
John Lebetski
Woodstock, IL
77 Eleganza II
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