Penetrating oil

steve706 · Mar 3, 2010

I want to know what is the best oil I can get. I've tried break away, break free,liquid wrench,wd40, fluid film,and anything else I could find. Someone told me about stuff called"mouse milk",is that a slang term or brand?I can't use heat because it is a magnisium part attached to aluminium casting. Any suggestions of what to get would be great. Thanks

Leyland-270 · Mar 3, 2010

Look up the brand name ZEP. They have some really cool products that they will sell you but you can't get it at stores because they require an MSDS. I have used their products for several years and have yet to be disappointed.

Pitalplace · Mar 3, 2010

Auto Trans fluid and acetone 50/50. Cheap and works

showcrop · Mar 3, 2010

Steve, a few weeks back someone posted results of a scientific study including the 50-50 acetone ATF blend that Pitalplace recommends. THe ATF-acetone tested better than all of those others.

Anonymous-0 · Mar 3, 2010

P.B. Spray, comes in a yellow can and you can get it at wal-mart and just about anywhere that sales auto. products.

MSS3020 · Mar 3, 2010

I had same problem until on this sight someone recommended Freeze Off by CRC. I couldnt believe the results Ive had. Used it just this morning..

Good Luck

Greg_Ky · Mar 3, 2010

I use Silikroil it seems to work a lot better than anything else that I have found. Just my $.02

Anonymous-0 · Mar 3, 2010

"Mouse milk" is a slang term. We used Kroil at work so tried it a home and didn't have any better results than with Liquid Wrench or PB Blaster. I've read that WD40 will eventually varnish so don't use it on anything. Also tried the acetone trans fluid combination and thought it worked OK. Recently have gravitated toward PB Blaster for rusted stuff and Liquid Wrench for everything else. Don't use that much and the aerosal is convienent. I've got a hand-held stainless steel sprayer that is compatible with oil products which has a Schrader valve to pressurize with air. Occasionally thought about filling it the acetone/trans fluid and using it instead.

Anonymous-0 · Mar 3, 2010

I've had extremely good luck using DOT3 brake fluid as penetrating oil. Granted it wouldn't be a good cheap alternative for large scale use, but on smaller projects it works great.

Dean · Mar 3, 2010

No comparison.

Kano Labs Kroil.

Dean

omahagreg · Mar 3, 2010

I started using the 50/50 ATF/Acetone mix last fall. I am VERY impressed! I put it in a cheap spray bottle from Walmart, and it works great. Greg

old · Mar 3, 2010

When ever I can I use ATF on things and that seems to work the best for me but I have used it for years for 2 reasons. #1 it works most of the time and #2 and this one is the important one it is cheap compared to any thing else

S2710 · Mar 3, 2010

I have tried the ATF and acetone and it works good but a product call Penetro 90 works very well. It is made by Schaeffer Manufacturing Company St Louis Mo. For questions or coments the can said call 1 800-325-9966. HTH Bob

keh · Mar 3, 2010

Recently someone showed me an old tool that had been rusted stuck. He had soaked it in various oils for a long time with no results. Then he soaked it in Coca cola for a few days and it came loose, removing the rust also. Tool was used for some valve work on a model T or A Ford

KEH

Bill(Wis) · Mar 3, 2010

Deep Creep is another one that works pretty good. Made by Seafoam.

RodinNS · Mar 3, 2010

How much is the aluminum part? The magnesium part? I'm betting you're going to be buying one or the other...or both.

Rod

Billy NY · Mar 3, 2010

I use an industrial type called Free-All it is made by Gasoila, do a search on the web, it will come up, I think most of them are marginal in differences, from what I have seen, but there are so many variables too. This particular penetrant is pretty good, I would recommend it, probably 10 bucks a can, but a can does last quite awhile. Sometimes there is no substitute for heat and vibrating/impact, as no matter what you spray on, it never penetrates fully.

Anonymous-0 · Mar 3, 2010

Try this before having me commited by the guys with the white coats. Cut a lemon in half and tape or wire it around the offending part for a couple of days. The juice will seep in and eat away the corossion.

Old Roy · Mar 3, 2010

Just bought a can of that a few min ago .
the can felt awful empty till I got to reading it and they have dropped the contents to 11 oz. from 16 and charge about $5.25 for it now at Advance auto.

DeltaRed · Mar 3, 2010

soak it in vinegar.(oldtimer's remedy)

the tractor vet · Mar 3, 2010

Of all that has been said i see only ONE that knowes and that is THE BEST product on the market and i have been using it since 1968 since i was turned on to it and i have tryed all the rest but i stick with the best and that ZEP , and i am here to tell you you do not have to dropwned the part to get this stuff to work . It is like Brill Cream a little dab will do ya and sometimes it may take a couple dabs over a couple days but it does work and work vary well , BUT IT AIN'T CHEAP .

GNP Fatboy · Mar 3, 2010

Misty, sold by Northern states supply. Works great for me.
Kevin

ericy · Mar 3, 2010

i use a product called GIBBS $10. a can you only use a little and a few taps with a hammer then take a rag wipe off then you can paint right over it i find it at Portland In tractor shows I will NEVER go back to WD-40 or that stinky PB Blaster

RayP(MI) · Mar 3, 2010

I tried several different ones on a old hayrake to remove the nuts that hold the bearings in the spiders. NONE of them actually penetrated very far into the threads, even after several day"s soaking, several applications. Fortunately the nuts all came off with repeated application of a impact wrench, but inside all the threads were dry. None penetrated well. WD40 and PB blaster were among the ones I used.

Ecnerwal · Mar 3, 2010

That's the phosphoric acid in the coca-cola working as a rust remover.

Phosphoric acid should be available without the sugar in milk stone remover at a good farm store.

Likewise, the lemon is citric acid doing the same thing.

I have a can of Kroil, and one of PB blaster, and I have things they don't touch, miracle marketing to the contrary notwithstanding. I expect I'll mix up the ATF + solvent version when they run out, or before.

This site has added candle wax + heat to the things to try, in a different discussion - several independent posts from guys with birthday candles in the toolbox.

ben brown · Mar 3, 2010

i ues tri-con spray lube its more a lube light oil then pentrating oil good for air tools also. personal i think penetrating oil is more a fell good ,we tried something,, then anything else baciely just plan ol snake oil. but we all ues it, ol guy told me to get rust looes place part in bucket of water then p_$$$ in bucket

Old Timer in Ohio · Mar 4, 2010

Hey there;
Strange as it seems, I've had very good
results, with tightening the bolt/nut a
little bit FIRST. Seems to "break the
bond" caused by the rust. God luck!!
Bob
God Bless

Penetrating oil

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