This may seem like a dumb question but I'd like to know a legit answer... My AMG manual from 1986 says the motor needs 93 RON to run most efficiently. We only have 91 octane here so I plan to mix higher octane fuel or tolulene with it to acheive the 93 rating. (Keep in mind, I haven't regularly driven my car since the engine transplant, it will be ready in about 2 weeks.) My question is, if I get the octane to 98 or something, will the car run worse than on 93 octane? I don't want to mess with the timing at this point. Any info would be appreciated.

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Mike
-W126C 560SEC 040 Black
*6.0L AMG M117 32v Hammer
-W163 ML320 Brilliant Silver
-W124 300E Pearl Black