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Old 05-23-2017, 11:15 PM   #6
Steeveedee
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Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,967
Re: Engine Oil Ranking

Quote:
Originally Posted by FirstOwner69 View Post
I've seen numerous threads here about which oils are OK to use in flat tappet and high performance engines. Most tend to recommend oils with high levels of ZDDP. A friend has a bunch of oils from the late 1990s. This prompted me to search for more info on ZDDP levels in today's oils. The link below, from 2015, provides interesting info on ZDDP oils and wear protection. Obviously, I have no information on the author's credentials.

Comments???

http://www.sccoa.com/forums/showthre...*Good-read***&
Unless I see this person's credentials (degree level and subject), I'll rely on what the oil manufacturers rate their oils as. I frequent an automotive site where one of the guys just murders Fram oil filters. I've used them for decades on my and my family's vehicles without ever seeing an oil-related failure. I have a Toyota Corolla with well over 200k miles, and a Chevy truck with over 100k miles on the rebuild, and have not had an oil-related failure with them, either. On top of it, I just use NAPA brand oil, and have yet to wipe the cam out on my truck. It's tired, true, but that has to do with over 100k miles (pulling a trailer for about 5k miles of that). It'll still spin the right rear tire on dry pavement when I'm towing the trailer and I get on it, so maybe "tired" is a bit of a stretch. Gotta love that 402's torque.
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'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
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