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Just keep using synthetic, but change >>>
Posted by Kyle [Email] (more from Kyle) on Fri, 8 Mar 2002 13:49:45
In Reply to: uhh, is it ok to change from syn to regular oil?, dein, Fri, 8 Mar 2002 13:05:24
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to a higher viscosity rating. But don't stray too far beyond whats recommended in the manual. Try 15W-40 or something similar. Higher numbers mean thicker oil.
As long as their ratings are the same, synthetic and regular oil have about the same flow rate at regular engine temperatures. At temperature extremes synthetic is far superior, which is why it should be used in turbocharged engines.
In fact, regular oil probably becomes thinner at high temperatures than synthetic oil, so it could even have the opposite effect than what you intended.
-Kyle
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