Penitrating oils

[ole george]

A Machinist's Workshop magazine recently published this info on penitrating oils

OIL AVE TORQUE TO LOOSEN
NO OIL USED 516#
WD-40 238#
PB BLASTER 214#
LIQUID WRENCH 127#
KANO KROLL 106#
ATF*-ACETONE MIX 53#

The ATF-ACETONE mix is a home brew mix of 50-50-automatic transmission fluid and acetone. Laquer thinner can be substituted acetone.

I don't know how scientific the tests were but I thought quite interesting. Has anyone used the ATF mix?

[Dimitri13]

WD-40 isn't a penetration oil, it's a lubricant.

I've used both PB Blaster and Liquid Wrench, both work just as effectively.

The ATF/acetone mix is what guys use to unstick rusted cylinders. May take a couple weeks or even longer, plus heat cycling, but it usually produces favorable results. As for the mix on stuck bolts, never really had to try it. Usually an off-the-shelf penetrating fluid and sometimes some heat, plus an impact driver/hammer (ALWAYS) will do the trick.

I've undone just about every rusty and stuck bolt on my 40-year old motorcycle and have only had to slot or dremel 3.

[1980project17]

I've heard about the mix, but never tried it myself I have a friend of mine that swears by it, I stick to my cans of pub blaster, it works good enough for me.

[Beepster]

Originally Posted by Dimitri13

WD-40 isn't a penetration oil, it's a lubricant.

I've used both PB Blaster and Liquid Wrench, both work just as effectively.

The ATF/acetone mix is what guys use to unstick rusted cylinders. May take a couple weeks or even longer, plus heat cycling, but it usually produces favorable results. As for the mix on stuck bolts, never really had to try it. Usually an off-the-shelf penetrating fluid and sometimes some heat, plus an impact driver/hammer (ALWAYS) will do the trick.

I've undone just about every rusty and stuck bolt on my 40-year old motorcycle and have only had to slot or dremel 3.

Acutally, WD40 isn't a lubricant, it's water displacement (Hince the WD). I've used Kroil Oil, and it's very good, better than PB Blaster of Liquid Wrench, but I also use both of those for different projects.

[Dimitri13]

Ah my bad on that. I've never heard of, or seen in stores, Kroil Oil. I'll keep an eye out for it, since I'm frequently trying to turn rusty bolts.

[LOCKJAW]

Call it whatever you want, but WD-40 is a great product that can be found in most locksmith's tool tray. Countless service calls for jammed, stuck or frozen locks and panic exit devices over my 40 year career were quickly solved with a squirt of WD-40 in the right spot. It helps free up, clean and lubricate any mechanism. I believe it is kerosene based. I have found nothing to replace it.

[number9]

This stuff is a great penetrant too:

[zero]

Originally Posted by number9

This stuff is a great penetrant too:

http://images.lowes.com/product/conv...45324779lg.jpg

Sometimes you just can't beat the Blue wrench!!

[jkk]

I like to put a little heat on a bolt / nut if possible and as it cools keep spraying it with PB Blaster and it will suck it in to the thread seems to help break it loose.

[ole george]

Bump

[steelybill]

That Kroil brand isn't sold in stores, that I know of. It's sold direct. An aviation friend uses it all the time, & orders it direct.

[Geoff1200]

DOT3 brake fluid does wonders....used it on the body mounts of my 67 and all but 1 came out clean....the 1 was rusted in half so no chance of salvation....

[mrblanche]

Originally Posted by Geoff1200

DOT3 brake fluid does wonders....used it on the body mounts of my 67 and all but 1 came out clean....the 1 was rusted in half so no chance of salvation....

It's also a great paint remover. A word to the wise is sufficient.

[PFlo]

I have used Zepreserve for years, rust just melts off.

PFlo

[Lindsay]

I like Kroil because it works well and you can control the spray, which comes in handy when you don't need a blast of oil through the tube. My last use was on the top and bottom nuts/bolts holding the original rear shocks.
There's a 2 for offer at the bottom of this page for anyone interested:
http://www.kanolabs.com/google/