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Old 08-17-2019, 02:46 PM   #13
6spdhyperblue


 
Drives: 6th gen
Join Date: Aug 2013
Location: US
Posts: 3,670
Quote:
Originally Posted by Rlhay2 View Post
With E85 you are jamming 30% more fuel into the compression chamber. Every cylinder has some leakage, thus this extra fuel winds up in the oil.


The E85 contaminated oil is OBVIOUS at as little as 1500 miles. On a stock car, it may not have any adverse affects to run that oil for another 3500 miles. On my 850rwhp car, I change the oil every 1500-2000 miles.

And I wouldn't run 0-40 oil in a warm climate.
Do you have ported heads?
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