All Fuel runing with used motor oil

Thanks for everyone's inputs. For what it is worth, I tried it this afternoon. I put about 2 gal of used filtered oil into my tank with about 5 gal of gas. My model B ran fine after it was warmed up. Mowed my 3 acre field. A little blue smoke but power and performance was fine. What I haven't done and will do tomorrow is try a cold start. I may have to clean the plugs. I am running a 12V battery and she cranks over well, so we will see.
 
Kinda like a 2 stroke, but more oil.
I have never heard of anyone doing what your doing without messing it up.

How did you filter the oil.......? Old sock, gravity drain?
 
Yeppers the old so called "All Fuel" tractors were primarily designed to run on the cheaper lower octane distillates or drip fuel available at the time (a bit similar to Kerosene today). However, they were set up to do so ONLY AFTER the temperature was up (they started and ran on gasoline until they reached temperature) plus they required HOT Manifolds so the fuel/air mixture remained in the vapor state.

I've seen a few run on fuel and kind of liked the smell they produced. Its great to hear of things like youre doing, keep up the good work.

John T
 
I've done it in the past with my old 620. Motor is getting pretty weak anyway so just dumped a gal. in with 5 gals of gas. She smoked a little but not that bad. Took awhile to get warmed up but after that it ran fine.
 
I filtered it through a bag designed to filter paint. Really just a fine mesh strainer. Gravity flow into a funnel. It worked OK. I may have to put gas in my small tank for starting, but that will take some work. Tank needs cleaning and replumbing. I took the 3-way valve out years ago because it was leaking. I still have all the parts, just need to put it back together.
 
My dad"s big tractor when he first bought the farm was a 43 A, hand start on cut-offs. We always said if "P" would burn she"d run on it if you got er warm enough. (yes, I talk different than I type online). I think you"ll need the gas starter tank working. Might be a little testy till hot. If not, wow!!. We usually ran stove/furnace oil. And you learned to plan, park the equipment right and get to work and hot before the starter tank was empty.
 
Gentlemen,
please forgive me hijacking the thread but I've always wanted to know... when switching from gas over to distillate, was that transition made slowly, as in mixing the two fuels gradually, or was it just switched quickly?
Seems kinda related so thought I'd dump it in here. At 57, I'm not quite old enough to have ever encountered an all fuel that actually used all fuel.

Bob
 
(quoted from post at 12:14:10 07/24/14) Gentlemen,
please forgive me hijacking the thread but I've always wanted to know... when switching from gas over to distillate, was that transition made slowly, as in mixing the two fuels gradually, or was it just switched quickly? Bob

Bob
Once engine operating temp gets to 200 degrees just switch totally from gasoline to distillate fuel or Kerosene
 
There is a fuel bowl on the carburetor, incoming fuel will mix with what is already in the bowl as fuel is drawn into the intake. Depending on how big that fuel bowl is, and how much load is on the engine, I'll speculate that it takes several minutes or more for the mixture of the two fuels in the bowl to gradually change from 100 percent gasoline to 100 percent distillate.
 

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