Take a Spoonful and Call Me in the Morning
Those who remember the late Tex Smith’s Hot Rod Mechanix may also recall the name Dave McNurlen as the author of many of the features and tech articles that appeared in that magazine. (Editor’s note: Some may also recall that Ceridono and I also worked wi
Was talking with a guy on Sunday who was trying to replace an oxygen sensor in his car. It was stuck and ideas were discussed on how to remove it and what could have prevented it from getting stuck. He said that when he was in the service they used Milk of Magnesia as an antiseize compound on jet-engine igniter plugs. That sounds crazy, but it could also be one of those obscure tricks used by racers older than you and me. Have you ever heard of a racer, or anybody, using Milk of Magnesia as antiseize? BestRegards,
Back in the late ’60s while serving in the Air Force I heard that Milk of Magnesia was used as an antiseize compound on the fasteners in “hot” portions of jet engines, such as igniters and afterburner components, but I never did see it applied firsthand. In fact, I thought it was a joke that was sure to be followed by a punch line like “we only use it when the engine has gas” if anyone asked about the practice.
A quick search of the Internet turned up a number of websites with a variety of tips on using Milk of Magnesia for everything from an antiseize compound to an anti-spatter coating when using silver solder. Several former Air Force jet mechanics on one site claim that various official shop manuals specifically called for using Milk of Magnesia during engine assembly. The claim is that when used as an antiseize the water in Milk of Magnesia evaporates and leaves behind a white powder, magnesium oxide, with an extremely high melting point. Interestingly, several of the related Internet posts caution that only the unflavored version of Milk of Magnesia should be used. Go figure.