The problem we had was that virtually any organic material we used as an antigallant would turn to carbon at 1200-1400F and become gallant . . . a pretty effective thread locker! The results are similar to the aluminum oxide that forms from galvanic action around steel bolts in an aluminum outboard! Grease or Tef-Gel works by insulating the dissimilar metals to prevent galvanic action and works well if it doesn't get too hot. The Kroil seemed to penetrate on a microscopic level. A colleague who had a side business overhauling turbochargers found that using Kroil was the only way he could get them apart, and he got Pratt to start using it. The use of heat and cryogenic liquid nitrogen also created enough relative motion between parts to help it work even better.
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