Best penetrating oil

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botts

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Proper torque !?

Fasteners that have sufficient vibration and can work themselves loose over time generally specify some sort of thread locker. Typically smaller ones where you cannot get sufficient torque without breaking.

I have greased all my lug nuts long ago...

Woah! This can be danger zone! Torque specs are given for dry fasteners, not lubed.

When engineering, a formula is used to convert torque from dry to wet. Most anti-seize brings torque specs at least 20% lower, down to potentially under half of what the dry spec would be.

Torque is used as a proxy for clamping force. Torque is easier to measure than the better proxy (bolt stretch) or best method (directly measuring clamping force).

Some anti-seize brands list what the torque reduction should be. See here: Bostik Brochure. Torque reduction values are listed starting on page 3.

Interestingly Permatex does not recommend reducing torque values for their Anti-Seize PN: 81343.

My grandfather recently told me of a home brew that is a 50/50 mix of acetone and ATF. I haven't used it myself. But him and his friend swear it works great.

I use this in gunsmithing all the time. I tend to use aerosol PB Blaster, aerosol Liquid Wrench or whatever I have around for car use though just for ease of application.
 

toadeyes

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My grandfather recently told me of a hine brew that is a 50/50 mix of acetone and ATF. I haven't used it myself. But him and his friend swear it works great.



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This is pretty much old school, but yes it do works great.
 

cvbrewer

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There are a couple of penetrating oil experiments on youtube by Project farm. I can't say for sure that they are completely unbiased, but they are interesting to watch. They do test the ATF and Acetone combo.
 

1955moose

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We had a thread like this one about 2 months back. If memory serves, liquid wrench was one of the best for the money. It actually fared better than my fav, Kano aero kroil. I think the liquid wrench came in #2 or 3. Don't remember who was #1? I believe the consensus was Liquid wrench and heating the threads. I'd heat first, cool a bit, then spray. Fire hazard other way around.

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1955moose

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I think the atf and acetone came in #1 in that test, didn't it Jeff? That post from last month.

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Motorcity muscle

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Use a clear liquid with a pullout straw called rust buster, put it on take five and 9 times out of 10 no heat needed. But for anything exhaust, use the torch to heat it red and wait for the squeak.
 
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