07-16-2014, 06:07 AM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Southern Connecticut,
CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
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Not Ranked
If it were me, I'd be using 5W-30 Redline. It has higher ZDDP (1,200 PPM) and Moly than oils having the Starburst symbol. 20W-50 is very thick and would probably damage the engine during start-up especially during cold weather. If I had a roller cam and rockers I would just use 5W-30 Mobil1.
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