Not advocating, but...

[AtariGuy]

Would an unleaded gasoline consuming engine benefit from a small splash of diesel fuel mixed into the gas tank? Something like 24:1 or less.

Thought process - diesel has something in the range of 15% more energy for equal volumes than unleaded, and at that small of a mixture, shouldnt(?) cause serious damage to the head/crank. Or at the very least, i'm told diesel fuel makes a pretty good cleaning agent, it could help with deposits and gums through the front half of the engine.

Again - and for liability sake, i do not recommend people trying this at home. This is merely a thought experiment. Actually doing this will definitely void any warranties with your engine maker, could cause serious harm, and will probably give your spouse something to yell at you for...

[geoffh]

I may have been in hiding or mixing in the wrong circles but no one has ever suggested gas/derv mix a good idea,I have seen gas engines wrongly fuelled by derv and it takes while to spit the derv out,messy noisy and loud but good fun if it,s not yours.


Geoff

[fuzzyruttin]

It will suddenly become a jet engine. Kidding, i don't know. Perhaps the polyetheramine cleaning agent manufacturers are hiding a secret from us.

[lordhater]

I don't recommend it myself,,modern engines ar designed to run lean and clean,,,too much oils and would create a fair amount of soot or worse case scenario coking which used to be a problem with engines in the early 20th century,,you'd literally would have to tear down an engine to decode the piston top and combustion camber in the head because of fuels questionable quality 

[Zino]

Atari you could be the first and the last to try this experiment .

Just to see what would happen .
I ran straight 2 stroke premix through a 4 stroke lawnmower engine with the engine oil drained out it ran for quite a few lawn cuttings and then boom ,time to get a new mower .

[tortoise2]

Lucas Fuel Treatment is another option. CSC blog comments . . Exhaust Notes blog comments.  Try 1 tablespoon per 2½ gallons of gas.

[jbjhillbilly]

It might work if your engine had insanely high compression, seeing as that’s how Diesel engines work, but you’d be running AV gas anyway, so I don’t think you’d get any benefit.

Kerosene would be a better thought, as it’s a cleaner (relatively). But really, I wouldn’t do it at all.

[AtariGuy]

I know diesel is a compression ignition fuel, but with the combustion of the unleaded, it would theoretically create the compression force to combust the trace diesel in the mixture. Again... theoretically. Cant say i've tried it. And im no chemist. But i know theres a lot of wisdom and advice here which is why i threw this thought out there

[FrankenMech]

I run fuel contaminated with oil/kerosene/diesel through my 4T lawnmowers to get rid of it. It may smoke a little but it has never hurt anything. Running the 4T crankcase dry would be recipe for failure. If it smokes too much I just dilute the contaminated fuel with more gasoline. Gasoline that has been used for parts cleaning gets filtered and run through the lawnmower also. I do have to replace the plug every few years... One of my garage sale mowers smokes anyway on startup.

[bandito2]

Feb 15, 2020 11:11:42 GMT -5 Zino said:

Atari you could be the first and the last to try this experiment .

Just to see what would happen .
I ran straight 2 stroke premix through a 4 stroke lawnmower engine with the engine oil drained out it ran for quite a few lawn cuttings and then boom ,time to get a new mower .

I think the reason the 4 stroke engine toasted was because while the cylinder maybe got some lube from the oil in the fuel mix on intake and compression, the 4 stroke engine does not get the fuel/air mixture circulated around in the crankcase like it does with 2 stroke engines. I'd guess the piston rod bearing got cooked at the crank junction after the residual 4 stroke oil eventually cooked away.