Originally Posted By: dlundblad
I've always had decent luck with PB Blaster, but is there anything out there that's better? I also wonder if mixing ATF at a ~25% ratio would help allow the penetrating oil to stay on the parts longer.
Yes, there is. In order, 1) Kroil and 2) Liquid Wrench 3) probably a host of others.
I did a test several years ago when restoring a neglected older Honda motorycle, and I had all three in the garage. I had about a dozen chassis bolts that were equally exposed to the elements. I soaked two each with Kroil, PB, and Liquid Wrench. I left them overnight and then tested how easily they broke free. I don't recall the torque values, but the pair that were Kroil'd were substantially easier than the pair that were soaked with Liquid Wrench, and the pair with PB substantially behind that. It was not a thoroughly scientific test, but it was consistent with my past experience. Since then (~c. 2005), I have stuck with Kroil with no regrets.
I know lots of people get good results with acetone + ATF. I've tried it and didn't find it better than kroil, and it didn't seem to penetrate as well. It also constantly separates and is difficult to apply in a lot of situations since it isn't in an aerosol container. I love home-brew solutions and if I needed a large amount of something I could just pour on instead of needing to shoot in various angles and tight/blind places, I'd likely use it.
Last month I picked up some Free All because it was basically free w/a coupon at O'Reillys. It has some great reviews and I'll give it a real work out on some rusty undercarriage work on an older car this winter. it's much more available and cheaper than Kroil and if it proves 95% as good, I will probably switch to it. This stuff:
http://www.freealloil.com/
https://www.amazon.com/Gasoila-Free-Rust-Eater-Penetrating/dp/B00CRKVNSE#customerReviews
Anyone use it?
I've always had decent luck with PB Blaster, but is there anything out there that's better? I also wonder if mixing ATF at a ~25% ratio would help allow the penetrating oil to stay on the parts longer.
Yes, there is. In order, 1) Kroil and 2) Liquid Wrench 3) probably a host of others.
I did a test several years ago when restoring a neglected older Honda motorycle, and I had all three in the garage. I had about a dozen chassis bolts that were equally exposed to the elements. I soaked two each with Kroil, PB, and Liquid Wrench. I left them overnight and then tested how easily they broke free. I don't recall the torque values, but the pair that were Kroil'd were substantially easier than the pair that were soaked with Liquid Wrench, and the pair with PB substantially behind that. It was not a thoroughly scientific test, but it was consistent with my past experience. Since then (~c. 2005), I have stuck with Kroil with no regrets.
I know lots of people get good results with acetone + ATF. I've tried it and didn't find it better than kroil, and it didn't seem to penetrate as well. It also constantly separates and is difficult to apply in a lot of situations since it isn't in an aerosol container. I love home-brew solutions and if I needed a large amount of something I could just pour on instead of needing to shoot in various angles and tight/blind places, I'd likely use it.
Last month I picked up some Free All because it was basically free w/a coupon at O'Reillys. It has some great reviews and I'll give it a real work out on some rusty undercarriage work on an older car this winter. it's much more available and cheaper than Kroil and if it proves 95% as good, I will probably switch to it. This stuff:
http://www.freealloil.com/
https://www.amazon.com/Gasoila-Free-Rust-Eater-Penetrating/dp/B00CRKVNSE#customerReviews
Anyone use it?
