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Diesel fuel in a gas car, any permanent damage....

I did that once in an old '73 Toyota Celica (18RC?) I had back in college days.
Thing had a tiny tank and I mistakenly pumped about 3 gallons of diesel in it one night on the
way to "party town" with friends.
Yes, some inebriation may have been involved...I was riding shotgun and played pump jockey.
Thing bucked and smoked and belched - and I kept topping off the tank with high test the next
several days - until all the smoking and belching eventually cleared up.
One heck of a way to give an upper valve treatment if ya ask me. :)
 
Bull crap. Diesel fuel and gasoline are each a blend of hydrocarbon compounds derived from petroleum crude oil. If these compounds are mixed, they will remain mixed and will not separate unless they are subjected to a distillation process (heating and condensing the vapors at the appropriate temperatures


And if your trying to impress us with how smart you are... I can cut & paste too... But I try to make a point of crediting my source... I mean you even kept the quote about heating & cooling vapors....

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I can't honestly say it was a quart or two quarts... It wasn't much... You could see it floating in the gasoline, they didn't mix, it was pretty obvious what was diesel & what was gasoline... And you could smell the diesel over the gas fumes....
I've mixed the two fuels plenty of times; draining old tanks and using the mix for degreasing. They seem to mix just fine, never seen them stratify. But if the diesel did float on top, it wouldn't have entered the pick-up and been fed to the engine.


However, adding 10% diesel to your gas is going to lower the octane by about 5 points right away, among the other problems listed above.
 
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Couple gallons of diesel in a full tank of gas.
It will be fine, as posted top it off with gas each time you get room for a few gallons.
 
Drain and drive. May take a bit to totally get performance back. I can say one thing? This is FAR better than putting gasoline in a diesel engine. Today's newer fuel designs can detect the gas and you go nowhere. But older diesels? Can be wrecked quickly.
 
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Back in the late 70's fuel shortage had a friend loan out his car to someone. I believe it was a Oldsmobile. The guy figured he'd pay him back by filling his tank via siphon out of a local business fleet vehicle. Turned out to be diesel. So what did he do??? Drained it out down the street into a storm drain. These guys were world class Rocket Surgeons.
 
And if your trying to impress us with how smart you are... I can cut & paste too... But I try to make a point of crediting my source... I mean you even kept the quote about heating & cooling vapors....

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I just found a simple explanation. So quit crying just because you got busted. You just got a taste of your own medicine.
 
I just found a simple explanation. So quit crying just because you got busted. You just got a taste of your own medicine.

My own medicine? Really? I spent time trying to help people & you see that as somehow bad? Your screwed up...
I already admitted that your were correct about fuel & gas mixing but with the stipulation there was definitely something that didn't mix.. End of the day the important take should be drain the fuel, flush the system & replace the fuel filter... And hope the guy gets lucky...
 
My own medicine? Really? I spent time trying to help people & you see that as somehow bad? Your screwed up...
I already admitted that your were correct about fuel & gas mixing but with the stipulation there was definitely something that didn't mix.. End of the day the important take should be drain the fuel, flush the system & replace the fuel filter... And hope the guy gets lucky...
Explain how I screwed up. I also spend time trying to help people. In the past you have made jabs at my comments. So get over it. I am.
 
My old 76 Colt had 12k miles on it when I bought it in 86 and was pristine. The tank was almost empty when I filled it up with diesel and it flat out quit running a short ways from the station. I drained the tank but didn't flush it. It did take a bit to get it to fire up and stay running and after having to trickle gas down the carb and keep refireing it but once the line was clear of the diesel, it ran like it always did.....slow under powered and no fun at all.
 
Way back, a 4-cyl diesel Chevette(yes, they made them)got towed in. Full tank of gasoline, started running bad about mile after fillup.
Tank had a drain plug, drained tank, replaced fuel filter and cranked it over. A little clicking & clanking, then settled right down; he never had a problem.
The truckstop actually had a load of gas dumped in underground diesel tank.
 
While we're talking about Diesel fuel, a fellow I worked with bought a diesel Rabbit in the early 80's. The guys would keep putting diesel fuel in it so he thought he was getting a 100 MPG with it.
 
While we're talking about Diesel fuel, a fellow I worked with bought a diesel Rabbit in the early 80's. The guys would keep putting diesel fuel in it so he thought he was getting a 100 MPG with it.
Thats a great gag!
 
I worked with a guy that put Diesel in a mid 70's Ford station wagon and that car literally smoked till that got rid of it. Looked more like a 2 cycle engine running.
I did a similar thing. I took Dad's 1 gallon "gas" can and put the contents into my 69 Dart....
I ran out of gas on graduation night on the way back home. I was 10 miles from home and hot-footed it to the house, grabbed the can and went back. IT turned out to be kerosene he had for killing weeds!
The car smoked but wouldn't run. Another 2 trips getting gas a gallon at a time and with a 2 to 1 ratio, I drove to the station and filled up. It did smoke a bit more than usual.
 
Got it...sorry i am a little slow.
 
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