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Penetrating oil comparison

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Forum topic by bubinga posted 04-23-2011 11:44 AM 3058 views 0 times favorited 11 replies Add to Favorites Watch
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bubinga

861 posts in 1414 days


04-23-2011 11:44 AM

Topic tags/keywords: resource tip trick restoration radial arm saw

Here is some information that I ran across, because I am starting to restore a DeWalt radial arm saw. Interesting stuff

Penetrating oil comparison
Machinist’s Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as forwarded by an ex-student and professional machinist, Bud Baker. Don’t forget the April 2007 “Machinist’s Workshop” magazine comparison test.

They arranged a subjective test of all the popular penetrants 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
transmission fluid and acetone. Note the “home brew” was 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
about as good as “Kroil” for about 20% of the price. Your experience may vary, etc., etc.

-- E J ------- Always Keep a Firm Grip on Your Tool


11 replies so far

View hvroberts's profile

hvroberts

39 posts in 2028 days


#1 posted 04-23-2011 04:50 PM

I have been using a Penetrating oil that is put out at John Deere and find it to do quite well. I have not run a test like you have, Would be interesting to see how it does. Also, I would like to add that years ago when working construction we would get flat tire on the trucks, we tried everything to help loosen the lugg nuts. We found that pouring “Coca Cola” on the nuts and than going to lunch, by the time we got back the lugg nuts didn’t give us much fight at all. I have used it since and have had the same luck. The only problem I have now is that I drink “Pepsi”.

-- Hvroberts, Up North In Maine

View RetiredCoastie's profile

RetiredCoastie

999 posts in 1929 days


#2 posted 04-23-2011 05:17 PM

We use Air-Kroil a lot at the hanger and it works really well. The product that I like the best is wintergreen. You can get it I believe at the drug store. Years ago we were removing the hinge pins from an aircraft that had folding wings and the hinge pins wouldn’t budge and we tried everything known to man. An older or I should say more experienced gentleman gave us a can of wintergreen that we soaked the pins in for 30 minutes and they came right out. Give it a try if the other ones don’t work.

-- www.thepatriotwoodworker.com Proud Supporter of Homes For Our Troops

View philip marcou's profile

philip marcou

262 posts in 1343 days


#3 posted 04-24-2011 04:53 AM

Now that is mighty interesting Bubinga- I mean your home brew. The WD40 result is not surprising and I am quite certain the stuff we get today is not the same as the WD40 used on oil rigs in the North Sea in the seventies.
I wonder how a mixture of diesel and acetone would work? The trouble with Acetone is that it kills you…..
If you look in Talkfestool I posted some pics etc of a rebuild on a Dewalt r/a somewhere in Marcou planes Progression pictures

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ScottN

261 posts in 1426 days


#4 posted 04-24-2011 04:12 PM

nice post cr1

-- New Auburn,WI

View Dave's profile

Dave

11205 posts in 1586 days


#5 posted 04-24-2011 07:12 PM

I have been told that liquid wrench is brake fluid. I haven’t looked at the safety sheets to compare. But if we were in the middle of no where and my old dad needed something to break loose. He would get a little brake fluid and soak it. It usually would give.

-- Superdav "No matter where you go - there you are." http://chiselandforge.com

View NBeener's profile

NBeener

4806 posts in 1920 days


#6 posted 04-24-2011 07:13 PM

Wait.

Is this a comparison of penetrating oil, or a penetrating comparison of oil ??

I’m so confused.

I use PB Blaster, and to good result. I’m glad to see a bit of science to help put PB Blaster’s performance in context.

Thanks for posting this !

-- -- Neil

View Div's profile

Div

1653 posts in 1686 days


#7 posted 04-24-2011 10:19 PM

No man, it is an oily comparison of penetration! ATF and acetone? I will give that a shot for sure, thanks dude!

-- Div @ the bottom end of Africa. "A woodworker's sharpest tool should be his mind."

View Gregn's profile

Gregn

1642 posts in 1730 days


#8 posted 04-24-2011 10:28 PM

A question I have, was did they meaning, April 2007 “Machinist’s Workshop” magazine comparison test give a time frame to achieve these results? While the Average load poundage numbers are interesting, it would be interesting to know the time frame to achieve those results as well.

-- I don't make mistakes, I have great learning lessons, Greg

View NBeener's profile

NBeener

4806 posts in 1920 days


#9 posted 04-24-2011 11:41 PM

Great question, Greg.

Looks like 8hrs of immersion:

http://sterkel.org/papers/vintage/Testing_Penetrating_Oils.pdf

-- -- Neil

View syenefarmer's profile

syenefarmer

394 posts in 1827 days


#10 posted 04-25-2011 12:51 AM

In my very limited usage of penatrating oils I’ve found that PB Penatrating Catalyst performs much better than Liquid Wrench. Also, in a real world situation, how often can you actually immerse the nut you’re trying break loose?

View Dusty56's profile

Dusty56

11684 posts in 2434 days


#11 posted 04-25-2011 01:14 AM

Very interesting …are those foot pounds or inch pounds of torque ?
I see that it was actually power steering fluid , not auto trans fluid, that they mixed with the acetone.

-- I'm absolutely positive that I couldn't be more uncertain!

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