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      12-21-2012, 03:10 PM   #1
Private First Class

Drives: '08 e92 M3
Join Date: Jul 2012
Location: NJ

Posts: 163
iTrader: (1)

Check engine light from too low octane gas?

Can lower than spec'd octane gas in a car cause the CEL to come on? I put some brand-x 89 in a car that takes 91. CEL came on, though it drove fine. I balanced the mix with some 93 and soon after the CEL went back out.

Last edited by Crypty; 12-21-2012 at 04:44 PM.