Author Topic: Penetrating oils tested  (Read 2268 times)

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Offline Cut4fun .

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Penetrating oils tested
« on: December 30, 2011, 08:59:26 pm »
Does this sound right to you guys?

Machinist's Workshop magazine tested penetrants for break out torque on rusted nuts with significant results!

They arranged a subjective test of all the popular penetrants with the
control being the torque required to remove the nut from a
"scientifically rusted" environment (obviously a BIG nut!).

Penetrating oil ...... Average torque

     

        None ....................... 516 ft lbs

     

        WD-40 ................... 238 ft lbs

     

        PB Blaster .............. 214 ft lbs

     

        Liquid Wrench ..... 127 ft lbs

     

        Kano Kroil ............. 106 ft lbs

     

        ATF-Acetone mix....53 ft lbs

     

        The ATF-Acetone mix was a "home brew" mix of 50 - 50 automatic
        transmission fluid and acetone. Note the "home brew" was better than any
        commercial product in this one particular test. Our local machinistgroup mixed up a batch and we all now use it with equally good results.

     

        Note also that "Liquid Wrench" is about as good as "Kroil" for about 20%
        of the price.

     
       Another method to try when 'nothing works' is to heat the nut up with a torch to almost red hot, apply Bee's Wax to the threads and base of the nut, let it sit for about 30 min then remove the nut.  If this doesn't work, get a nut cracker or a hacksaw !  A trick I learned from Dugan that had been around and passed it on to us.  We used this method to remove big safety valve nuts that had not been removed for almost 24 years when nothing else worked. BO
     

        Happy knuckle busting !

Copy and pasted from a email my dad sent me.
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Offline Al Smith

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Re: Penetrating oils tested
« Reply #1 on: December 30, 2011, 10:30:14 pm »
That makes sense .Acetone is a solvent which would carry the tranny fluid into the offending tighter that a mouses ear offending restriction .

Incidently last summer I ordered a gallon of kroil which freed up a stuck Ford 300   six in my old pick up truck which resides in the woods in semi retirement .Good heavens every month I get a flier on good deals from them .

Good info .I have a stuck D4 Cat vintage 1940 that given enough time I will ressurect .

I'll retire in a couple of years but will have to live at least another 30 in good health to ever get all the stuff done . ;D

Offline rms61moparman

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Re: Penetrating oils tested
« Reply #2 on: December 30, 2011, 10:37:21 pm »
I've heard good things about acetone and ATF but for the things I do a decent shot of Aero Kroil works great.

Mike

Offline Al Smith

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Re: Penetrating oils tested
« Reply #3 on: December 30, 2011, 10:48:38 pm »
I think a lot of that stuff was just things shade tree mechanics dreamed up .For example Berrymans Chem-tool was originally make in Lima Ohio ,where I live .

I think it was a brain child of Charlie Paxton who was a stock car builder may his soul rest . In later years Charlie lost both legs to diabetes  but still built engines even from a wheel chair . Pretty impressive to a 16 year old of which I was when I met him .

Offline bloodontheice

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Re: Penetrating oils tested
« Reply #4 on: January 02, 2012, 07:12:59 pm »
In my line of work it's not so much getting nuts loose, but pulleys off shafts, and
and wheel hubs off axles.

The best product we've found is Castle Thrust, but at 7$ a can we've done some un scientific
testing and PB Blaster, and Liquid wrench are almost as good and under 4$ a can.

Never heard of the accetone and ATF trick, but i do have both sitting around so i'll try it out.

Offline mdavlee .

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Re: Penetrating oils tested
« Reply #5 on: January 02, 2012, 08:09:51 pm »
I'll have to mix some of the acetone/atf together and give it a shot. A friend of mine used straight atf sometimes for penetrating oil and it worked alright.

Online farmboy

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Re: Penetrating oils tested
« Reply #6 on: January 03, 2012, 11:09:41 am »
Mix I found somewhere was 50/50 acetone and brake fluid.  Tried it, it works pretty good.  Am gonna try the atf blend to see if it's better.
Shep

Offline Jeff

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Re: Penetrating oils tested
« Reply #7 on: January 03, 2012, 07:59:39 pm »
Where would you buy acetone? I have never seen it at least I dont think I have.

Offline Cut4fun .

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Re: Penetrating oils tested
« Reply #8 on: January 03, 2012, 08:24:03 pm »
I have seen it at my local True Value hardware stores.
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Offline Jeff

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Re: Penetrating oils tested
« Reply #9 on: January 04, 2012, 04:16:54 pm »
I bought a quart today at Lowes $6.88

 

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