Penetrating Oils on Rusty Bolt/Nut Environment

[davbell22602]

I thought I'd share info.

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.

 

[89Suburban]

You got a link to the tests? I do not know how they can perfectly control the rust conditions equally for each test, but it is good info if true.

 

[davbell22602]

You got a link to the tests? I do not know how they can perfectly control the rust conditions equally for each test, but it is good info if true.

No but you buy the back issue here of it.

https://secure.villagepress.com/store/items/detail/item/1549

April 2007 "Machinist's Workshop

 

[HotRodPC]

I don't know about the testing, but I know for a fact this mix works. I even made mine with used trans fluid that was fairly clean. Does seem to work better then PB Blaster.

 

[89Suburban]

I don't know about the testing, but I know for a fact this mix works. I even made mine with used trans fluid that was fairly clean. Does seem to work better then PB Blaster.

Get the Acetone at Home Depot? That stuff fugg up your hands?

 

[HotRodPC]

Get the Acetone at Home Depot? That stuff fugg up your hands?

Yep, I bought like a pint can of Acetone, and mixed with with a 1/2 qt (pint) of trans fluid. I ended up putting it all in the 1qt trans fluid bottle, tearing the label off and hit it with some white spray paint so I'd know what it is. I put it in a dishsoap bottle to squirt it on things like u bolts on axles, or into cylinders of seized motors etc. I did get one sezied motor freed with it after soaking for 2 days. But it was a motor that got rained in, only sat for a week, so it wasn't to bad yet.

 

[89Suburban]

Yep, I bought like a pint can of Acetone, and mixed with with a 1/2 qt (pint) or trans fluid. I ended up putting it all in the 1qt trans fluid bottle, tearing the label off and hit it with some white spray paint so I'd know what it is. I put it in a dishsoap bottle to squirt it on things like u bolts on axles, or into cylinders of seized motors etc. I did get one sezied motor freed with it after soaking for 2 days. But it was a motor that got rained in, only sat for a week, so it wasn't to bad yet.

I'll be making a batch of it to try out when I attack my shock mounts. If it's as good as they say, hopefully that will be a great thing to use to free up 20+ year old brake line fittings without fuggin them up.

 

[Beatdown Z]

Pretty cool info!