You can sometimes run regular or mid-grade when the weather is cool. Remember, the 92's 10 to 1 compression ratio isn't as stiff as the 11 to 1 of the 93 and later 4.2s. I sometimes cheat the octane game by running octane booster I find on sale. Anything over three dollars though is a waste because if you do the math, that's the price difference between a tank of regular and a tank of premium. Don't use anything made by Johnsons though because they are crap. Also make sure that when you do buy mid-grade or premium, that you are really getting said grade. Fact: One out of four pumps aren't dispensing what they claim to be. Buyer beware.

Do not change the gears in your 400E. You will regret it. The fuel economy will suffer. I'm running uncorrected consistent 14.4s in the 1/4 mile now in street trim at a over one thousand foot elevation track with the stock 2.24s. Leave them gears alone son.

If you want to hop it up a little, read about my adventures with mine here and on 500Ecstasy. Start with my dragstrip threads and please share your adventures in those threads as well. That was my original intent with those threads but hardly anyone else is drag racing MBs. That needs to change!

Hows about being a sport and selling me or trading me that 87 300D! I'll trade you two nice 300Es for it! It's only fair that I should be allowed to take the plunge into MB diesel ownership since you are taking the plunge into MB gasser ownership!
Regards, Eric

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89 300E "Benzer1" 15.924 Uncorrected
93 400E "Benzer3" 14.200 U.C.
95 E420 "Benzer4"
92 300E "Benzer5" 16.299 U.C. Future turbo CNG
87 300D "Benzer7"
87 300D "Benzer8"
87 300D "Benzer9"
87 300D/70 AMC Javelin "Sidewinder-Benzer"
87 300TD "Benzer11"
06 E320 CDI "Benzer12"
05 E320 CDI "Benzer12A"
71 AMC Javelin AMX 401 "Sidewinder"
74 AMC Hornet 401 "C.K.10" 13.63 U.C.
74 Bricklin SV1 "Presto" AMC 360 pwrd.