Re: Tractor fuel

Posted by Bob Kerr on August 13, 2001 at 20:09:51 from (205.188.200.56):

In Reply to: Tractor fuel posted by Paul K. on August 13, 2001 at 10:58:21:

Those fuels are fairly close to being the same thing. The reference to power fuel implies a fuel that has a high caloric rating.In otherwords it makes more heat to push the pistons a bit harder than ,say , gasoline. Kerosene was a bit "cleaner" as far as the distilling prosses goes since it was mostly used in lamps and "dirty stuff like distillate would make more fumes and smell in the house. Modern Diesel has additives like parrifin to lubricate the injector pump and injector tips. Starting a tractor that runs on kerosene or distillate is pretty close to the same as starting one that uses gasoline because you have to start a kerosene tractor on gasoline. Once the water temp is hot you would "switch" over the valves on the fuel tanks so Kero would go to the carb.Kero burners have two fuel tanks, one smaller one to hold gasoline to get it started and warm it up, and one large tank to hold the main supply of distillate or kerosene. The exhaust manifold has to be very hot to heat the intake side so the kerosene will evaporate. Kerosene will not evaporate enough to start a tractor when it is cold.It will also dillute the oil some no matter how hot the water or manifold is and the oil change interval is much less than if you run on gasoline which doesn't dillute the oil unless you flood the engine badly.If you look at the oil pans on some Old Farmalls you will see 3 valves that are used to check the oil level. If you run kerosene you have to drain the oil out of the center valve after about 8 hours or so running time. what happens is that the kerosene that gets into the oil from the blowby thins out the oil and also rises to the top, (if you have non detergent oil like they used back then),after the tractor sits overnight. In the morning before starting you drain off the thin stuff through the center oil check valve and add fresh oil to the level of the top valve. The use of disillate and kerosene was pretty common at one time because it was VERY cheap compared gasoline. I know of one guy who said his Dad burned plain old Oklahoma crude oil in his tractor. They had an oil well on their place back in the 30s.It would run ok on it but it would gunk up the spark plugs after a while. I suspect he only did it because times were so hard and they had very little money to buy better fuel. I have 2 kero burners , an F-12 Farmall and a McCormick-Deering 10-20,and used the 10-20 last year on kerosene. It ran great but I did go through lots of oil as it thinned out.

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