Acetone/ATF mixture performance report - Vintage Mustang Forums

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post #1 of 13 (permalink) Old 04-08-2017, 05:02 PM Thread Starter
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Acetone/ATF mixture performance report

It's "out there" on the net that a 50/50 mix of Acetone & ATF is frequently effective
at removing fasteners badly corroded in place.
I've used the mix before myself but today I found a fastener situation where it didn't
help in the least. Applying heat didn't help either......

Milspec fastener AN363-524 is a prevailing torque "lock" nut, 5/16-24 in thread. They
are also found in other thread dimensions as well.
I had to cut the locking segments at the top of the nut off very carefully with a Dremel
to remove it, on what I would call, a slightly corroded thread.
This nut was factory installed inside the door of my '48 Ford truck.....

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post #2 of 13 (permalink) Old 04-08-2017, 06:28 PM
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I've had to do the same thing with that style nut only larger 1/2"-28 they installed them without any thread lube, that can cause them to gall the thread when tightened.

I'd never use them on anything either use a plastic style locker or some thread locker.

What a pain.

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post #3 of 13 (permalink) Old 04-09-2017, 12:12 AM
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I've used about half a quart of the ATF "mix" before I canned it as next to useless and went back to PB Blaster. PB Blaster seems to help a little every little once in a while and that's the best results I've gotten out of ANY so-called penetrating oil.

I say "mix" because ATF and acetone do NOT mix but with vigorous regular shaking you can keep it in suspension.

I'd say that trimming off the locking portion of the nut was the best thing you could have done. I hate locking type nuts that tend to wipe out the protruding threads as they are removed. Even if corrosion does play a part.
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post #4 of 13 (permalink) Old 04-09-2017, 01:52 AM
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I just bought Kano Aerokroil and it works very well for the first time I used it for a rusty nut

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post #5 of 13 (permalink) Old 04-09-2017, 06:37 AM
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Aerokroil

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Originally Posted by c6fastback View Post
I just bought Kano Aerokroil and it works very well for the first time I used it for a rusty nut
Aerokriol is by far the best penetrating oil on the market... This stuff just plane works, not cheap. But you get what you pay for.
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post #6 of 13 (permalink) Old 04-09-2017, 08:25 AM
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And usually, a second or third important component of any of these is patience.
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post #7 of 13 (permalink) Old 04-09-2017, 02:38 PM
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Third is extreme heat accompanied by a big hammer. (Once the patience runs out)
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post #8 of 13 (permalink) Old 04-09-2017, 03:26 PM
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post #9 of 13 (permalink) Old 04-09-2017, 04:04 PM
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I don't think any company wants the liability of putting 50 percent acetone into a spray can and marketing it for household use. It probably works well sometimes.
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post #10 of 13 (permalink) Old 04-09-2017, 04:07 PM Thread Starter
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Quote:
Originally Posted by GypsyR View Post

I'd say that trimming off the locking portion of the nut was the best thing you could have done. I hate locking type nuts that tend to wipe out the protruding threads as they are removed. Even if corrosion does play a part.
I was dreading that step but I knew it was coming. This was on the vent window mechanism up inside the door....
Most of the hesitation was taking that vent window assembly out of the door, knowing all the stuff that had to
come apart (and risk damage, etc.) to deal with that ONE NUT.

As the drill sergeant said, "I taught you everything you know. I didn't teach you everything I know."

"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams
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post #11 of 13 (permalink) Old 04-09-2017, 06:31 PM
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I was dreading that step but I knew it was coming. This was on the vent window mechanism up inside the door....
Most of the hesitation was taking that vent window assembly out of the door, knowing all the stuff that had to
come apart (and risk damage, etc.) to deal with that ONE NUT.
Coming from that kind of family, I can testify that it's always that ONE NUT that ruins it for everyone!
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post #12 of 13 (permalink) Old 04-10-2017, 09:53 AM
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Quote:
Originally Posted by Dino1 View Post
Aerokriol is by far the best penetrating oil on the market... This stuff just plane works, not cheap. But you get what you pay for.
I save AeroKroil for when PB Blaster won't work.
It's like having an Ace in the hole.
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post #13 of 13 (permalink) Old 04-13-2017, 11:05 AM
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Another vote for Kroil.
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