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Old 01-28-2013, 01:54 PM   #5
Electron herder
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Joined: Jan 2011
Location: Indiana
Oddometer: 632
I used to fly model airplanes and the heads would get varnished due to the two-stroke oil.

I cleaned them by letting them soak for a day or two in a crock-pot full of antifreeze. I don't remember the temp setting, but they don't get that hot anyway. Did a great job of getting all the dirt, etc. out of the crevices.
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