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Your manual should state minimum and recommended
I’m in the U.K. so mine is obviously listed in RON but my m550 states minimum Ron 91
Engines are designed to run on:-
M performance model 98
(Non m performance model 95)
I personally run mine on 99RON fuel that we have here, there is no 98 but there are some that are 97
Should find it under fuel grade at the back of the manual
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