Quote:
Originally Posted by Jim314
In the mid 1980s while on a cross country trip, I put diesel in a 1981 petrol 4-cyl carburetted Pontiac Phoenix. My wife noticed what I was doing and alerted me after I had delivered maybe 6 gal of diesel into the ~14-gal tank. I filled it up the rest of the way with premium petrol, and we just went on our way. As I recall the engine knocked a little under even moderate accelerator pressure, so I drove with a light foot. I filled up again with premium when the tank got to near half full and I think the knocking stopped. There was seemingly no damage to the engine because the car went for years and years after that.
What percent of petrol in diesel fuel can a diesel engine run on, and without damage?
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This is an old bushy fix
Not sure of the exact ratio, however many sets of injectors have been cleaned by adding unleaded fuel into a diesel fuel tank. Believe the usual methodology is to not exceed 10% of the the total volume.
Unleaded creates a hotter fuel ignition temperature therefore burning away carbon deposits, cant comment on the long term effects of this process.