Reiver

Machinest Mag published this note on what works best....since we are some serious nut busters thought you might like to see it.



Machinist's Workshop Mag recently published some information on various penetrating oils that I found very interesting. The magazine reports they tested penetrates for break out torque on rusted nuts. They are below, as forwarded by an ex-student and professional machinist. They arranged a subjective test of all the popular penetrates with the control being the torque required to remove the nut from a "scientifically rusted" environment.


Penetrating oils Average torque to loosen

No Oil used ................... 516 pounds

WD-40 ...................... ... 238 pounds

PB Blaster .................... 214 pounds

Liquid Wrench ...............127 pounds

Kano Kroil .................... 106 pounds

ATF.................................53 pounds

Power Steering Fluid.........51 pounds

Houpty GT

The Diesel VW people are all into Kroil

wildcat077

That's good info ... just when i thought PB Blaster was "THE" thing ...
Thanks for sharing !

Cheers !
Phil

tulliotk

I know of several folks who swear by a 50/50 mixture of ATF and acetone.

Todd

Reiver

I've seen that refered to before and am going to mix some up...acetone to penetrate and the ATF to do it's stuff. I always have horse syringes around and that is a great applicator.

User 4221

I use this stuff for all the hard work on my '99 Suburban.

I used it on all the exhaust nuts on the 911 without breakage. If something is really stuck, I apply the 50/50 mix, let it set overnight, then apply some heat via MAPP gas. Works like a charm.

The Acetone is very light and acts as a carrier by pulling the ATF down the threads. I've looked at some of the nuts/bolts I've pulled apart and it appears that the mixture will penetrate down about 5+ threads.

It is cheap and effective. I don't waste money on PB Blaster any more.

Ed Hughes

Funny, I just saw the acetone/ATF referenced on the 993 board a few days ago.

Wachuko

Now you tell me... pssffffttt!!!

Reiver

I was waiting for you to finish...my 'replacing the engine' tips come 24 hours after you're finished.....think of it like a Government program.

rusnak

I don' think ATF and acetone mix. Do you apply them sequentially? Say ATF first then a dab of acetone?

Ed Hughes

Hey-look who's back!

User 4221

If sitting for a period of time, they will separate. The acetone is much lighter than the ATF.

I keep the bottle swirled/mixed when using it and it appears to work OK

Oh yeah, where the hell have you been?

rusnak

Haha!!

I've been busy setting up, running, then tearing down our annual Pumpkin Patch and Christmas tree lot.

We had fair rides, food, cotton candy, a stage with karaoke 3 nights a week, live bands, etc. It was a freakin blast. I should post pics for my Rennlist brothers!

Ed Hughes

Welcome back to the madness!

If you think about it-this mix is like a vinegarette!

Steve Weiner-Rennsport Systems

Interesting subject!

PB Blaster is more placebo than useful and I don't know any shop that uses that stuff.

There are a few professional-grade penetrants that are useful, one of which is Kroil. I use a Zep product (its on my website) with excellent results since a bottled liquid is difficult to apply in many situations, especially upside down.

Acetone is a toxic substance and not something I'd use around here as we go to a lot of effort to maintain a healthy working environment, given what we do. Caveat Emptor to those that do.