I have run 87 in my stock 90 forever, never had any problems. The sunoco near me has 87, 89, 91, and 93. Very nice once I start doing some work. For all you people who are putting premium in a stock motor w/o timing bumped up, its a waste. I one time saw some guy putting 91 in his, what looked to be stock, accord. And this guy didn't look like one to mess with his engine either. Some people.
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