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Registered
Join Date: May 2002
Location: Portland, Oregon
Posts: 12,725
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Quote:
Originally Posted by Bill Verburg
Mostly because almost everyone is using a decent oil.
The problems beagan back in the early 2000s when there was a switch in some oils to less than a 1000ppm ZDDP, it's now common is some oils to have 800ppm or less. Thes oils don't provide proper wear characteristics on the cam lobes. I know one fellow that trashed his 964 after just a year or so of using such oil.
Use the right weight and right ZDDP content and the car will be happy, there are several very good oils out there and also some marginal ones. Just avoid the sub 1000 ppm ZDDP oils by doing your due diligence
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Bill, Well said. Exactly the point. Our flat tappet engines require a bit of extra due diligence. One can always read this foolish thread for some older wisdom: forums.pelicanparts.com/porsche-911-technical-forum/367300-ultimate-motor-oil-thread-why-we-hate-cj4-sm-oils.html
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Harry
1970 VW Sunroof Bus - "The Magic Bus"
1971 Jaguar XKE 2+2 V12 Coupe - {insert name here}
1973.5 911T Targa - "Smokey"
2020 MB E350 4Matic
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