Quote:
Originally Posted by Kelbyat07
5k? I was planning to change my oil every 3,500 miles bcause I will be using E85. Do you think 5k would be safe for me
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You really don't know unless you send your oil out for testing. You can look at other people's test results with a similar setup, but in the end everyone drives different and in different environments/fuel/car/oil/etc.
2013-2014 factory recommend interval is 7,500miles.
2015(brz at least) is 6,000miles
Suggested/recommend cut in half when running e85.
But look at the test results, some people have good test results and some
can run up to 10k on a stock setup.
Do whatever you are comfortable with, get it tested and go from there. I would suggest 4k(your 3,500 ok too) and get it tested, good medium between 3k and 5k, while be a little bit on the safe side.