I agree, drain the tank, refill with diesel and drive it. #1 diesel is similar to mixing #2 diesel and gasoline to keep it from gelling. In an emergency, the earlier MB diesels will run on 100% gasoline with a much reduced power output.

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Doug
'83 300SD "Old Gold" 170,000 mi.
'82 380SL "Green Machine" 190,000 mi.

Some days you're the pigeon, some days you're the statue... I'd rather be the pigeon!