I had occasion to meet the President of CRC, I mentioned Kroil and the guy took
a mini snap. He that everbody says Kroil was better, when he calmed down a
little he said that CRC had tried to buy Kroil and Kroil would not sell.

My experience as a mechanic in the shipyards was that Kroil was better, and
that when you were using a smoke wrench to heat fasteners for easier removal
you had better success with nuts by heating only one flat of the nut. Heating
and cooling cycles seemed to work best.
Steam turbine casing flanges used a bolt with a hole in it for a heater. You
heated the fastener then torqued it to a certain value, when the fastener
cooled it got really tight. The exact temps escape me.

John H.