GlenL

This came up in a thread and it is worth repeating. Swiped from another forum.

"The April/May 2007 edition of Machinist's Workshop did a test of penetrating oils where they measured the force required to loosen rusty test devices. Buy the issue if you want to see how they did the test. The results reported were interesting. The lower the number of pounds the better. Mighty interesting results for simple acetone and tranny fluid!

Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."

I like using Liquid Wrench in the little squeeze bottle. Cheap and goes right where I want it. Keep a spray can handy for some applications.

andy-gts

hmmmm , interesting ....I always thougth pb better but may liquid wrench is in my future

vanster

You can buy Kroil from Eastwood, I have found it to be the best
It comes in an rattle can

M. Requin

Good info, I think WallyP posted it here once, some time ago. I've used the ATF-acetone mix, works fine.

NoVector

^^^ I just saw that post this week and bought a can of acetone yesterday. Now wondering if I should use Dexron III or VI

Shark_Week

kroil works very well. i have it in a rattle can and a small can like the liquid wrench. somewhat expensive but works and goes a long way

LT Texan

Working down that list, the last and most difficult of my head studs only came out with.....

Acetone and ATF!!!!!!

Thank God for that!!!!!

ubercooper

A list of penetrating oils and KY isnt listed?

danglerb

Same as 3 in 1 oil isnt it?

I like to have a variety of penetrating oil handy, try one, try another, use some heat, hit with a hammer, eventually it works.

Kroil usually has some kind of online deal going, two king sized cans shipped for $17.95, http://www.kanolabs.com/google/

Marvel Mystery oil is I have heard anyway, pretty close to ATF.

Other goops also have some tricks and my work better in some circumstances, guts of an old post I made in Garage journal below.

http://www.practicalmachinist.com/vb...ing-oil-72979/
Stuck Diesel Engine... which penetrating oil?

http://www.practicalmachinist.com/vb...ing-oil-90570/
What is your preferred penetrating oil?

The penetrants below are mentioned in these two threads, in no particular order:

Kroil http://www.kanolabs.com/google/
GM Heat Valve Lubricant 1#1052627
MoPar heat riser solvent
PB Blaster
Sea Foam Deep Creep "Sea Foam is amazing stuff" http://www.seafoamsales.com/deep-creep.html
Marvel Mystery Oil
"Knock 'er Loose" by CRC http://www.practicalmachinist.com/vb...ing-oil-90570/
Freeze Off by CRC http://www.boatsupplyonline.com/634-...nts/15910.html
"Mouse Milk is my penetrating oil of choice." http://www.mousemilk.com/
Yield http://www.chemsearch.com
Gibbs http://www.usalubrications.com/gibbs.html
Wurth product called "Rost Off" http://store.cdoc.com/wurthrost-off.aspx
Free - "it is made by lubemaster" http://www.certifiedlabs.com/certified/splash.asp