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Old 05-03-2010, 09:13 PM
JohnM. JohnM. is offline
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Join Date: Dec 2007
Location: NorCal
Posts: 1,332
Quote:
Originally Posted by bsmuwk View Post
Are you still using regular grade fuel?
It may not be you, but somebody somewhere with a name similar said something about your use of 87 octane on a road trip without any problems and your continued use of regular grade fuel.

Just saying, maybe the use of regular fuel over an extended period of time does have it's side effects. Food for thought is all. Would be interesting to see if that were the case.
That's true. Continual running of low grade gasoline is not good for the engine. Nowhere in the manual does it say that 87 octane is OK. It's not because Mercedes is trying to stick it to ya, these engines REQUIRE premium gasoline. Conversely, running 91 in your Honda when it only requires 87 is just as retarded.

Even though there is a knock protection system on these cars, there can still be detonation you are NOT hearing, causing engine damage!
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