Thread: If I wanted to dump some used motor oil in my fuel tank,,,,,,,,,
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Old 03-20-2013, 09:35 PM
Mark DiSilvestro Mark DiSilvestro is offline
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Join Date: Jan 2001
Location: Alexandria, Virginia
Posts: 5,480
Maybe 4 - 5 times in the past six years, I've added a gallon of used oil to a tankfull of diesel on my W123s. Either the relatively clear motor oil or ATF from one of my gassers that sees lots of highway miles. Never the sooty diesel-oil though.
Did have a problem one time, plugging the primary filter on my first 240D. Changed that filter and it was fine.
In warm weather, I used to have signficant pinging (nailing?) with my latest 240D under part-throttle. That noise went away after adding a gallon of ATF from my '96 Camry.

Happy Motoring, Mark
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