They do still have aerosol products, and right now they have a special where you get a free can with any purchase. I just got some Penephite and a free Aerokroil. The shipping is expensive, though...pretty much made up for the free can. It worked great for me so far, but I didn't have a super challenging situation...yet
I just exercised a bit of "Moderator Largess", and copied & merged two threads about rusted bolt removal here to the FAQ section. So it won't exactly "flow", but there is a lot of good info here.
And the reason for my exuberance? I have a Sprint exhaust manifold from my '75 SportWagon that had four of the six flange bolts rusted in place. I am sure that they are the original bolts from 29 years ago, and were just AWFUL looking with rust. I just looked at them and said "well, it's either break them off, drill them out and Heli-Coil the holes, or try that wax trick that RallyBob waxed so eloquently about (sorry, I just couldn't resist the pun).
Fortunately, the manifold had been previously removed from the engine by cutting the exhaust pipe just after the two down-comers join. So I was able to clamp the whole thing in my bench vice, and use my acetylene torch to get it good and hot (close to red hot on the manifold, and I actually did get the bolt heads red hot). I then used a common candle, which made a fair bit of smoke when I touched the hot bolts and manifold, and let it drip down along side the heads and then turned the manifold over and let it drip down the holes (from above).
I didn't let it cool much, as the manifold would be expanded the most (and the bolts loose) when it was hot. I used my 1/2 inch impact wrench, but there was really no need. They just spun right out like they were brand new bolts. AMAZING!
Post Script: I tried the same technique to remove the EGR connection on the tail pipe. The EGR tube on the '75 EFI goes down to below where the two down-comers merge, and the connection was a mass of rust. I mean, there was NO WAY this was going to come apart without destroying it. So I heated it up with my torch, applied some wax, and used a flare-nut wrench on the compression nut. And it just un-threaded! No fuss, and the threads looked as new, even if the outside of the nut and the fitting itself was rusted with pits. DOUBLE AMAZING!
While looking through one of my farming magazines, I came upon an ad for "Kroil". I'd remembered reading on one of the threads about how good it was on freeing rusted parts, so I thought I'd pass this on. According to the ad, it is an order direct item. $7.50 for one 10 oz. Aerosol can (Aerokroil). The website is KANOlaboratories.com The address is Dept 71Ro4 P.O Box 110098, Nashville TN 37222-0098 Phone 615-833-4101 E-Mail [email protected] HTH, Jarrell
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