Gasoline vs kerosene


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Posted by David Sherman on Friday, December 16, 2005 at 1:54PM :

In Reply to: Cosmolean in my U-joint posted by Dave F. on Friday, December 16, 2005 at 7:17AM :

I use gasoline too, which I suspect is what all the motor pool guys in WWII used, but a fellow at a reputable bearing house told me that one should never use gasoline to clean bearings. He said to always use kerosene. His reason was that after a bearing's been cleaned with gasoline, the gear oil never sticks to it quite as well any more. I'm not sure if it's because the gas leaves some kind of residue in the pores of the metal or what. This was after I'd cleaned all the bearings in my M35 transfer case with gasoline.

Another way to get most of the cosmoline out of anything is to just heat it and let it run out. You still need solvent (warm kero?) to get the remaining film off, but at least you don't have to dig out big globs of it. My understanding is that cosmoline is basically a mixture of beeswax and mineral oil, and that it was applied in a melted state, so it makes sense to melt it off.



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