Super A wrote:Yikes! That much (potential) unburned fuel must have made it tough to keep oil on the cylinder walls.
Just thought of something else: JD always bragged on how the two cylinder tractors could burn just about anything flammable. Did they have a similar procedure for draining off some oil and adding fresh every day?
Never seen anything saying to do so, but this makes me think I should open my book and look closer. I have never seen an increased oil level between oil changes, and it never comes out smelling like fuel, so I do not feel as if this is a concern. Perhaps being used every day for a main farm tractor it could be? Potentially the horizontal big low compression john deere engines did better with this?
However, I run a John Deere A all fuel. I've run it on a variety of fuels, mostly mixtures of kerosene and gasoline, and even used oil filtered out and added to the main tank mixed with gasoline. The tricks, you start on gas and you get the engine nice and hot, there are shutters on the radiator, you close them, and you hitch up to something that will provide a good load, not a sickle mower, I'm talking a plow or disc, you need to be working the engine. Basically if its not popping hard you don't produce enough heat energy and the cooling system works too well and you see your temperature drop off on the gauge. SInce the auxillary/starting tank is so small if you aren't in temps and you run on the aux tank you'll run out of fuel quickly, so we'll never give ourselves a full tank of kerosene if we won't use it rapidly.Anyhow, you always make sure to switch back to pure gas run long enough to make sure that's all that's going through your engine, then shut the petcock off and allow the tractor to run out of fuel completely.
There is some carb tuning sometimes as well, its easy to do on the Deeres, so once you're running hot and switch over sometimes it pays to hop off real quick and fiddle with the mixture screw. There is one guy I met running an All fuel unstyled B on E-85. Recall Ethyl fuels were all the rage, pre-leaded gasoline. These things seem to run fine with minor tuning on the ethanol, I would make sure to switch it back to low ethanol before shutting down. And again farmalls may be different in this regard.
All fuel is kind of fun, interesting smells.