From: "Patrick Hoyt" <pwh...@yahoo.com> To: "Corvair engines for homebuilt aircraft" <corvaircr...@mylist.net>
Got this from our local Corvair car guys about tests of the effectiveness of various penetrating oils. Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. The April 2007 "Machinist's Workshop" magazine comparison test. They arranged a subjective test of all the popular penetrants with the control being the torque required to remove the nut from a "scientifically rusted" environment. Penetrating oil tested Average load ---------------------- ------------ None 516 pounds WD-40 238 pounds PB Blaster 214 pounds Liquid Wrench 127 pounds Kano Kroil 106 pounds ATF-Acetone mix 53 pounds The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic transmission fluid and acetone. Note the "home brew" was better than any commercial product in this one particular test. Our local machinist group mixed up a batch and we all now use it with equally good results. Note also that "Liquid Wrench" is about as good as "Kroil" for about 20% of the price. *Your experience may vary, etc., etc.*
