just bought a 745i.

Asked by Apr 18, 2012 at 10:51 PM about the 2004 BMW 7 Series 745i RWD

Question type: General

They put regular gas in. Should I drivethe regular out than put premium. What should I do?? Help

3 Answers

55

im sure regular is fine

293,715

It won't harm anything. BMW recommends minumum of 91 Octane for max. performance and mileage. There are sensors that adjust engine knocking if using lower octane gasoline. So you can do what Jake recommends and or run it to half full and add 93 in and you'll be where you want to be.

1 people found this helpful.
10

Not true 91 grade gasoline only .. ethanol kills those cars it dries up the whole system if you love your car you would only use 91 gasoline only ethanol is the problem do not put it in your car

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