I'm thinking about buying a 1999-2005 gas Mercedes. I think I remember reading that Mercedes specifies using 91 or 93 octane premium.

Has anyone tried to run 87 (regular) octane gas in these cars? What is the performance difference? Does it "hurt" the engine or does the computer compensate for the difference?

__________________
Pete Williams, President emeritus - MBCA-International Stars (Eastern Mich.) Now Wi. & Az.
1985 300D Manual 4 speed Green Hen's tooth
1979 MGB triple black Az car nice
1969 back 1/2 of MGB (Az home built trailer)
1991 Volvo 245 Wagon Nice AZ Restored Gold Brick
1983 Jeep CJ7 37,600 Miles Summer use only