Do you mean putting it in the oil, or running it through the carb?
Never tried that, but for sticky valve guides (not hydraulic lifters,
mind you) pouring a quart of diesel fuel down the carb with the engine 
running fast (don't pour too fast or you kill the engine) will free
them up. However, it also causes massive air pollution in the immediate
area -- like half a block around gets enveloped in a white fog.

Harmon Seaver 
hseaver@nyx.cs.du.edu

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<> "The Way of the Samurai is death." - Jocho Yamamoto 1710  Hagakure <>
<> "Let no man's life stand in the way -- especially your own."       <>
<>                                       Miyamoto Musashi 1584-1645   <>
<> "The fundamental delusion of humanity is to suppose that I am here <>
<> and you are out there."                           Yasutani Roshi   <>
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