what happens when 5 gal of unleaded is put in my empty 6.6 duramax and driven 10 miles

Asked by hdsilverado Jul 06, 2014 at 05:21 PM about the 2005 Chevrolet Silverado 2500HD LT Crew Cab LB 4WD

Question type: General

4 Answers
50,715

John answered 9 years ago

Get the tank flushed out. It ran because of the residual diesel you had in the tank. You may even have to flush out the entire system and put in new filters. It happens often enough that dealers know how to correct it. It will cost you, but chances are you didn't ruin the engine. Good luck on getting it started. If you can, have it towed to the repair station as the gas will not ignite and get into the oil pan.

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