Penetrating fluids

BKahler · Post by **BKahler** » Mon Jun 01, 2009 8:10 am

This came from another forum that I'm a member of. Might have to give the last one a try.

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. 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)."

Brad

Post by **Lavoy** » Mon Jun 01, 2009 8:55 am

I would be really curious to see how water would have rated.
Lvaoy

JD440ICD2006 · Post by **JD440ICD2006** » Mon Jun 01, 2009 10:17 am

Very interesting.
I always wonder about these test. How could they possibly get that many "rusted components" that are at the same tension and require exactly the same torque to release?

Water is the cheapest and it works (unless you buy bottled water which has been proven to be not as good as most tap water, and far more expensive)
One of the marketing ploys with most of those commercial products is to add a fragrance that we actually become accustomed to, kinda like our favorite perfume on our woman. It actually makes us think it works better than it really does. They also add effervescence (fizz) to make it "look" like it is "soaking in" when it really is not doing any more than the others.

BKahler · Post by **BKahler** » Mon Jun 01, 2009 10:28 am

I think this list might be reasonably accurate. I've used all of them but the ATF-Acetone mix and would more or less agree on their degree of penetration. Supposedly the original article in Machinest Workshop they describe how the tests were performed. I haven't found the article so can't give any details on what they did.

I will definitely try the ATF-Acetone mix to see how that works. I've never tried water before but based on Lavoy's comment I will probably have to give that a try as well.....

Brad

Tigerhaze · Post by **Tigerhaze** » Mon Jun 01, 2009 1:15 pm

Water is one of the best solvents out there- the trick is to immediately dry the parts after seperation so they do not rust back together!

stmftr395 · Post by **stmftr395** » Tue Jun 02, 2009 12:37 pm

Acetone may be good for loosening threads, but it is BAD for you. Not that any of the chemicals we are using while working on equipment are particularly healthy, but acetone is a real skull and cross bones item. Use carefully. Mark

Lu47Dan · Post by **Lu47Dan** » Wed Jun 03, 2009 8:45 am

I think I will stick with Kroil , works very well and I end up using less of it then the other brands of penetrating oils .
Dan

JD440ICD2006 · Post by **JD440ICD2006** » Wed Jun 03, 2009 8:49 am

We all have our own favorites. I used to use Kroil. I found out that I can get a lot more water for a lot less money.
The only thing is, I am not adicted to the smell and fizz of water, since it has neither.
Another big disadvantage is that the water bottle is plain and does not brag about how well it works.

CELSESSER · Post by **CELSESSER** » Wed Jun 03, 2009 10:19 am

I have found that water at about 2000 psi penitrates very well and gets rid of the fine grit that makes removing shafts or parts from shafts difficult.

Chuck

Tigerhaze · Post by **Tigerhaze** » Wed Jun 03, 2009 11:04 am

I think I am going to have to try Kroil- water isn't always the best way for some of the parts I use and some of the other rust penetrants I have tried don't work all that well. However I keep hearing about how well Kroil works, and the study seems to confirm that.

KenP · Post by **KenP** » Wed Jun 03, 2009 12:42 pm

deleted

Post by **Lavoy** » Wed Jun 03, 2009 2:12 pm

Now I know why I don't like penetrants, I normally cuss for a couple days first, looks like I had it backwards!

Lavoy

JD440ICD2006 · Post by **JD440ICD2006** » Wed Jun 03, 2009 2:17 pm

If someone would make a penetrate product that would protect my knuckles, I would buy it!

Lu47Dan · Post by **Lu47Dan** » Thu Jun 04, 2009 8:09 am

Tigerhaze , I looked high and low around here for it and ended up buying it from the Eastwood company .
http://www.eastwood.com/kroil-1-gallon.html
I buy the gallon can instead of the aerosol cans , a gallon of Kroil goes a long way when it comes right down to it .
Dan

joeturner1977 · Post by **joeturner1977** » Thu Jun 04, 2009 8:49 am

Lu47Dan,
Sinclair is a shooter supply store and they have it as well. Their gallon price is better, and they have smaller sizes available. Check out this link.
http://www.sinclairintl.com/prod_detail ... antsGrease

Better Yet..... Check this out,
http://www.kanolabs.com/google/

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Penetrating fluids

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