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Old 10-04-2013, 01:15 AM   #181
bluesubie
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Quote:
Originally Posted by Deep Six View Post
I switched to Amsoil 5w-40 for a track weekend in August and saw a substantial jump in oil temps for daily driving. Sustained highway speed at 70 mph went from ~208 up to ~221.
Thick oil usually runs hotter.

-Dennis
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