Quote:
Originally Posted by Lexington
I experimented with running heavier oil in the past. I noticed the engine was much quieter but my gas mileage dropped too.
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I put 5w-30 in mine once. It was a screw up and it happened because all the other cars we had at the time used 5w-30. It was the dead of winter too. I noticed no differences. Gas mileage kind of sucks anyway with winter gas when it's 10* out.