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Home » Public Forums » GMCnet » Penetrating oils (Torque and penetrating oils, interesting and useful)
Penetrating oils [message #194670] Thu, 03 January 2013 06:25 Go to next message
mschultz is currently offline  mschultz   United States
Messages: 113
Registered: September 2010
Location: Maple City, MI
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Senior Member
GMC Enthusiasts

Got this from a friend this morning as a forward in an email. Very interesting and something that may be useful to us. I do not know who did the testing or it's authenticity.

Michael Schultz
1977 Palm Beach 403
Maple City MI

Penetrating Oils
Machinist's Workshop magazine
recently published some information on various penetrating oils that I found very interesting.
Some of you might appreciate this. The magazine reports they tested penetrates for break out torque on rusted nuts.

They 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 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 ATF-Acetone mix is best, but you can also use ATF and lacquer thinner in a 50-50 mix.
*ATF=Automatic Transmission Fluid


Re: [GMCnet] Penetrating oils [message #194674 is a reply to message #194670] Thu, 03 January 2013 07:39 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Michael,

Here's a copy of the Machinist's Workshop magazine article.

http://www.gmcmhphotos.com/photos/random-photos/p40657-penetrating-oil-test.html

Regards,
Rob M.

-----Original Message-----
From: Michael Schultz

GMC Enthusiasts

Got this from a friend this morning as a forward in an email. Very interesting and something that may be useful to us. I do not know
who did the testing or it's authenticity.

Michael Schultz
1977 Palm Beach 403
Maple City MI

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Penetrating oils [message #194742 is a reply to message #194670] Thu, 03 January 2013 19:50 Go to previous message
powerjon is currently offline  powerjon   United States
Messages: 2446
Registered: January 2004
Karma: 5
Senior Member
Michael,
Did a test here for the net early last year, here are the photos of the test. Some were unsure on which fluid to use.
<http://www.gmcmhphotos.com/photos/g5305-loosening-rusted-bolts.html

JR Wright
78 Buskirk Stretch
Michigan

On Jan 3, 2013, at 7:25 AM, Michael Schultz <mschultz2002@chartermi.net> wrote:

>
>
> GMC Enthusiasts
>
> Got this from a friend this morning as a forward in an email. Very interesting and something that may be useful to us. I do not know who did the testing or it's authenticity.
>
> Michael Schultz
> 1977 Palm Beach 403
> Maple City MI
>
> Penetrating Oils
> Machinist's Workshop magazine
> recently published some information on various penetrating oils that I found very interesting.
> Some of you might appreciate this. The magazine reports they tested penetrates for break out torque on rusted nuts.
>
> They 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 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 ATF-Acetone mix is best, but you can also use ATF and lacquer thinner in a 50-50 mix.
> *ATF=Automatic Transmission Fluid
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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