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Machinist's Workshop magazine recently published interesting information on various penetrating oils. They tested penetrates for break-out torque on rusted nuts. They arranged a subjective test of all the popular penetrates with the control being the torque required to remove the nut from a "scientifically rusted" environment.
Penetrating oils ........... Average torque load to loosen
Thanks all for the advice. I will get some real penetrating oil and try again. While I'm in town I will ask the autoparts stores about renting an airgun.
Don't waste time. Save $$ and buy something that will REALLY help.
It's called GripTite. I own one and it DOES work. Also, 12 point sockets do work well. If you strip that head with ill fitting socket, THEN you are in trouble.
GripTite is both SAE and metric. Now, those prongs inside move a little. Match a socket that will fit with largest effort possible. I used to hammer some onto a stubborn bolt. They are lifetime, so who cares. But if you get it on THAT tight, it WILL stay on the head for sure.
If you can remove the part it is affixed to, you can take it to a machine shop and they will remove it for less than $20
Sometimes you need to soak and soak and soak it. Each time you soak it tap it with a hammer every now and then to set up some vibration.
One time the solution that worked for me was a 12 point socket and a long breaker bar. The bar was positioned so that if I lowered the jack, the weight of the car push the breaker bar forward. That will either break the bolt or break it free.
Machinist's Workshop magazine recently published interesting information on various penetrating oils. They tested penetrates for break-out torque on rusted nuts. They arranged a subjective test of all the popular penetrates with the control being the torque required to remove the nut from a "scientifically rusted" environment.
Penetrating oils ........... Average torque load to loosen
This is surprising to me. A lot of people, myself included, seem to have plenty of anecdotal evidence that PB Blaster is much better for breaking rusted bolts free.
I'm going to have to try the ATF/Acetone mix
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