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post #1 of 7 (permalink) Old 04-14-2010, 04:16 PM Thread Starter
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Penetrating Oil

We were discussing whether WD40 is a penetrating oil. Then I received this from an aviation source.

For all you Gear Heads, review the below Test Results of
various Penetrating Oils for some interesting and useful tips

Penetrating Oils Compared

Machinist's Workshop magazine actually tested penetrates for break out
torque on rusted nuts. Significant results! 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 oil ..... Average load

None ..................... 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 was a "home brew" mix of 50 - 50 automatic
fluid and acetone.

Note the "home brew" was better than any commercial product in this one
particular test. A local machinist group mixed up a batch and 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.

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post #2 of 7 (permalink) Old 04-14-2010, 04:26 PM
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If i can i prefer to use a smoke wrench on rusted bolts.

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post #3 of 7 (permalink) Old 04-14-2010, 07:43 PM
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I have mostly used Kroil, as it is darn good and made in Nashville, and pretty cheap, it also goes a long ways on the small stuff I usually use it on, I will also vouch for Liquid Wrench being about as good, WD-40 has another name also "Gunsmith's Friend" because of the hard gum like film that it leaves which will cause problems with most guns and they will have to be broken down and seroiusly cleaned, never ever use it on a trigger...
One of the better things to use on a serious target trigger to clean & lube is "Ronsonol" lighter fluid...
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post #4 of 7 (permalink) Old 04-15-2010, 09:59 AM
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no marvel mystery oil?

<- Tom (me)
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post #5 of 7 (permalink) Old 04-15-2010, 10:54 AM
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I am a fan of Liquid Wrench too. The flammable one in the yellow can works great.
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post #6 of 7 (permalink) Old 04-15-2010, 11:29 AM
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Interesting results. Looks like I may have a use for that 1/4 bottle of ATF sitting in the garage!

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post #7 of 7 (permalink) Old 04-15-2010, 07:39 PM
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the best i ever used is rust check
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