01-19-2008, 07:38 PM
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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
Just for the record, you don't get 10W-30 by mixing 10 weight oil with 30 weight oil, you get something closer to 20 weight oil. Both multi-viscosity and straight weight oils get thinner as they get hotter. The multi viscosity oils (thanks to additives) just thin down less.
I'm always amazed at how many Cobra owners prefer heavier oils even though most of us have oversized crankcases and oil coolers. I know if someone came out with a 20W-70 oil There would be a rush to pour it in. I always wonder how much of the oil some guys are pumping is just going out the bypass.
Just my $0.02
Bob
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