Quote:
Originally Posted by Porschefile
Right, forgot the condition of the engine is useless. Find an engine expert that vouches for 15k oil changes on performance engines and I'll concede that my comment was useless. I'm not trying to make fun of you or give you a hard time, you honestly need to change it at like half that. I understand the 15k is when it's free, but a few bucks between is worth it.
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This is not true.
Just look at the oil analyses posted here and you will see that cars driven moderately (mostly highway) can easily go 15k miles on the oil. I'm running Redline race oil and still getting over 7500 miles between change outs.