octane
 

just-n-time here,my question is about octane rating,My loving wife has asked if she can put 87 octane in her 420sel,or dose she have to keep the high test
gas I told her to do what the instruction book said to do,She quickly quip well how do I know what the rating is in Germany! So I pose this to those who might know,some one help me set the Mizar straight.:behead: :silly:

There are no regular-gas Mercedes still on the road.

Well, some antique collectors may drive theirs occasionally.

do a search
 

do a search on this... Tons of information on this site on Regular vs Premium.

It all says you have to use premium!

Here is a quote from the technical editor of The Star, the magazine of the Mercedes Benz Club of America:

Yeah, there's lots of discussion by any advice that regular fuel is usable is mistaken and just wishful thinking.

If you want to use regular fuel, get an American car.

That is, one with an oversize, slow-running, low compression engine.

The octane number in Germany is the same as here.
RON ( Research Octane Number ) + MON ( Motor Octane Number ) : 2 = our rating system.
How do I know?..............Just filled up over there 2 weeks ago. ;)

My 85 380SE specifies use of 87 octane.