Quote:
Originally Posted by bulls96
if i change from 87 to a higher grade, is it better to use up the 87 i have in my tank first? what level can i start filling it up with a different grade?
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Idk what my dealer put in my tank but I figure it was 87 and I filled it up at a quarter of a tank with 91, I think filling up at a quarter of a tank left of below should be good enough.