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Penetrating Oils

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75Plus:
I got this from a friend and thought it was worth posting.

Joe

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Machinist's Workshop Mag recently published some information on various
penetrating oils that I found very interesting. Some of you might appreciate
this. The magazine reports the break out torque values on rusted nuts using
the tested penetrating oils.

Results are below, as forwarded by an ex-student and professional machinist.
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*

No Oil used .................. 516 pounds
WD-40 ........................... 238 pounds
PB Blaster .................... 214 pounds
Liquid Wrench ............ 127 pounds
Kano Kroil .................... 106 pounds
ATF*-Acetone mix......... 53 pounds

The ATF*-Acetone mix is a "home brew" mix of 50% - 50% by volume automatic
transmission fluid and acetone. Note this "home brew" released bolts better
than any commercial product in this one particular test.

Our local machinist group mixed up a batch and we all now use it with
equally good results.

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

Steve from Godwin-Singer says that the ATF*-Acetone mix is best, but you can
also use ATF* and lacquer thinner in a 50-50 mix
___________
 
*Automatic Transmission fluid

awemawson:
I saw this some time ago and the figures for ATF / Acetone were very impressive - in fact I then bought some ATF & a gallon of Acetone to try it. It so happens that ATF is not mixable with Acetone  :doh:

I do still have a spray bottle of the "mixture" on my solvents shelf in the workshop where the constituents sit as separate layers! I've just ordered a litre of Plus Gas for my next dismantling job (my chain trencher needs the track adjusting cylinders compressing to remove the tracks and shorten them by one link but they've not moved in 20 years!)

doubleboost:

--- Quote from: awemawson on January 10, 2013, 01:41:08 PM ---I saw this some time ago and the figures for ATF / Acetone were very impressive - in fact I then bought some ATF & a gallon of Acetone to try it. It so happens that ATF is not mixable with Acetone  :doh:

I do still have a spray bottle of the "mixture" on my solvents shelf in the workshop where the constituents sit as separate layers! I've just ordered a litre of Plus Gas for my next dismantling job (my chain trencher needs the track adjusting cylinders compressing to remove the tracks and shorten them by one link but they've not moved in 20 years!)

--- End quote ---

I have always found the best "plus gas" to be oxygen plus acetyline
John

awemawson:
Be a bit dodgy in this case John, the cylinders are grease filled !!

AdeV:

--- Quote from: awemawson on January 10, 2013, 01:41:08 PM ---I saw this some time ago and the figures for ATF / Acetone were very impressive - in fact I then bought some ATF & a gallon of Acetone to try it. It so happens that ATF is not mixable with Acetone  :doh:

I do still have a spray bottle of the "mixture" on my solvents shelf in the workshop where the constituents sit as separate layers! I've just ordered a litre of Plus Gas for my next dismantling job (my chain trencher needs the track adjusting cylinders compressing to remove the tracks and shorten them by one link but they've not moved in 20 years!)

--- End quote ---

Which ATF? There are several formulations, if you got one of the synthetic ones, maybe that's why it doesn't mix?

Then again, maybe you're supposed to shake vigorously immediately before application? I've never seen any usage notes for the ATF/acetone mix...

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