OHRoadwarrior
Senior Member
It almost sounds like a partial tanker of diesel was dumped in/mixed in by accident. I would siphon the tank dry, refill with 5 - 10 gallons of gasoline only and mix in 1 bottle (pint) of fuel injector cleaner. Repeating process might be required, after you run the 5 - 10 gallons through, to get residual oil residue. I would change fuel filter after the process is done and vehicle is running good.