|
Personally I've put 98 Ron in all my bmws.
At the same time my parents have had their C180 kompressor for 10 years - they got it new and have always used 91 and after 220,000kms the car still runs strong -for a supercharged 4 cylinder....
So i dunno.....is 98 better for the engine? Maybe, maybe not to the extent they make it out. I drive my vehicle in a spirited fashion so always use the best of everything just in case....
|