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Old 03-31-2021, 11:49 AM
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srmmmm srmmmm is offline
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Quote:
Originally Posted by Overboost View Post
Not sure I have any luck. 2 separate vehicles, 2 separate engines, closing in on 200,000 miles each running regular fuel, no issues.

Regular fuel in a high combustion engine can lead to detonation but knock sensors on the BMW will signal the DME to compensate the timing map to eliminate any detonation.

Keep in mind I do not do any real spirited driving, point A to point B is all my street cars do. But again, I have never heard any pinging or detonation since moving to regular.

I would usually run Shell mid-grade in the E53 unless I was towing or making an extended highway trip. Then I wanted to maximize timing advance for best mileage and avoid detonation with the higher engine loads. But always Shell to keep injectors and intake valves clean.


My F15 and the CEO's F32 only getting premium though with those turbos.
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2016 F15 x35i
2014 F32 428i


2004 E46 325i sold at 123,600 miles
2002 E53 3.0 sold at 388,801 miles
2001 E46 325i sold at 66,000 miles


1970 Firebird Under restoration
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