Finally, a WD-40 slam. I've been telling people this for years. For displacing water, fine. Otherwise toss that **** in the trash. It is not a penetrant. It is not a lubricant. It is not the magical go to spray can that so many people use. You will not find the stuff at my house. The shelves are for important stuff.
I have a little different method. I heat the plug first to expand it in the hole. Then I heat the area around the plug and rapidly cool the plug with liquid nitrogen to shrink it. This also cools the threads in the aluminum so they don't come out with the plug. An impact wrench set to lower power will jar the fitting if needed. On pipe threads, only turn it counterclockwise.
there is an oil called kroil,its expensive but it works.also you can go to sears and get the square hammer in e-z out,you drill a 3/8 hole for a 1/2 in,plug and then hammer the tool in and turn it with a wrench or an impact set on low.
I just dont see how melted candle wax can "wick" into the threads of a tapered pipe plug,with sealer on it. What keeps anti-freeze from "wicking" OUT when the engine is hot & the system is under pressure? I trust you guys that say it works,but never tried it or seen it done. I'll go look on you-tube--
Ding ding ding! We have a winnah! WD-40 is junk. A good penetrant like kroil, Liquid wrench or some other good quality stuff. I always use pipe dope on NPT stuff and it always comes apart. Not many here mention using never seize when ***embling stuff. Use the zinc on steel products and copper on br***. Easy way to remember silver on silver & copper on copper. I work in a highly corosive environment, a 1/4" mild steel plate will disappear in about a month, everything is stainless steel (316 or better) or hastaloy. Liquid Wrench is our best friend.
+1 I'm finally glad that someone has posted the straight skinny on WD-40. Why do people keep doing this?
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