| 08-09-2021, 01:43 PM | #1 |
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Gas Octane issue
Picked up a CPO 550i and have been seeing issues with Fuel. The person who had it before put lower octane fuel in the car. I have dont nothing but 91-93 since and have drven 4000, but again, getting codes. Dealer checks and still sees lower octane during a gas diag. Any thoughts?
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| 08-09-2021, 04:01 PM | #2 |
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Its a CPO...make the dealer figure it out.
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| 08-10-2021, 05:55 AM | #3 |
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What Steve said. If you have been using 91-93 for 4,000 miles, the low stuff is clearly out of the system. BTW, use only Shell or Mobile 93. Since it is a CPO, not your problem to figure out. If the dealer you are going to can't, bring it to a different dealer.
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