Re: Gasoline in Diesel Engine

Posted by jdemaris on April 10, 2005 at 06:48:02 from (209.23.29.24):

In Reply to: Re: Gasoline in Diesel Engine posted by Sid on April 10, 2005 at 00:43:53:

Yeah, my memory might be a bit confused. Back almost 30 years ago, I was doing a lot of repair work for a local Chevy dealer on the new diesels made from the 350 Oldsmobile gas engines. There was a lot of discussion about fuel for several reasons. The Roosamaster pumps were crapping out left and right, and at first - Stanadyne/Roosamaster blamed it on fuel. It was later blamed on the higher underhood temperatures that cars and trucks have - as compared to tractors. So, we had, #1 the issue of a high pump failure rate, #2 the issue of cold weather fuel treatment, and #3 the issue of the scarcity of diesel fuel in rural areas. So, there were varying recommendations for adding gas to diesel in emergency situations. We WERE told by General Motors reps. that a 20% dilution would not hurt anything if done occaisonally. Can't say I've ever tried it.
I've got a neighbor that does it in the winter with his pickup truck. Problem today is, we can't get clear kerosene anymore to add to the fuel in the winter. We used to mix up to 50%. Now, the kerosene here all has dye in it - whereas the gasoline does not. So, some people, to avoid the dye issue, are cutting the diesel with gas. I don't do it and I'm not recommending it. But, I CAN attest to this. I know of two diesel trucks that have been getting low-octane gas mixed with the diesel every winter and they haven't crapped out yet. Do they have any premature wear? I simply do not know. High octane gasoline has anti self-igniton properties, so that is why the low-octane stuff is used.
My point, in general, was not to panic if someone puts gas in a diesel tank by accident unless it's an awful lot of it.

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