Penetrants

[Maysik]

Discussing this topic on another forum, thought it might help someone here as well.

Immediately before I use any penetrant, I use Wurth: Rost Off Ice.

The Wurth site says:

"Shrinkage of sprayed parts quickly breaks open micro fine fissures allowing the lubricant to easily penetrate through the toughest rust".

CRC 5-56 has been my choice for years. I purchase by the 4 litre.

Just found this while trying to find KROIL over here in Australia.

This is a cut and past and is not mine, just borrowed from the web.
A bit dated, and from America, as we don't have some of the stuff listed.


From here down

"The April/May 2007 edition of Machinist's Workshop (vol 20 number 2) did a test of penetrating oils where they measured the force required to loosen rusty test devices. Buy the issue if you want to see how they did the test. The results reported were interesting. The lower the number of pounds the better. Mighty interesting results for simple acetone and tranny fluid!

Penetrating oil . Average load .. Price per fluid ounce
None ................. 516 pounds .
WD-40 .............. 238 pounds .. $0.25
PB Blaster ......... 214 pounds .. $0.35
Liquid Wrench ... 127 pounds .. $0.21
Kano Kroil ........ 106 pounds .. $0.75
ATF-Acetone mix.. 53 pounds .. $0.10

The ATF-Acetone mix was a 50/50 mix (1 to 1 ratio)."

Acetone is a bit pricey, but I have heard brake fluid and ATF work just as well.

[Vombil]

yeah handy info.. might be worth reporting how they rank from a safety point of view. not sure i'd like brake fluid or acetone all over my hands and paintwork!!!

[Maysik]

Your right there, havn't found an update from this bloke yet, he may have found out the hard way sucking in all the fumes from the experiment.

[Beachy]

I saw a similar sort of test a few years ago and diesel was up with the best of them

[SLR_dave]

"Penetrene" is pretty good. Give it two hits over 24 hours, only thing is the plastic bottle it comes in really only lets you apply it from the top down once it's about half empty (a small brush works though) . Harder to get now but Blackwoods still carried it last year when I bought the last bottle, $16 for 500 mills. But you don't use much. just a few drops and let it creep down the thread from the top.

[wbute]

I second CRC as a good product.
I use lots of never seize when putting stuff back together to try and avoid the problem. Also if you are doing water pipes with screw together fittings, an old product called Stockholm Tar is about as good as you can get to prevent seized threads.

[Valencia]

I was put onto a product called Fluid Film years ago by an old school mechanic its made in the USA
its a great product cant be to bad when NASA uses it and the American navy

[JDT]

Heat the threaded area up and then jam a candle on it. The wax makes into the threads and acts as a lubricant. An old bloke told me about this when I was an apprentice in the early 80's. His reasoning was any liquid penetrant burns off to quickly. Wax stays put.

[Maysik]

Heat the threaded area up and then jam a candle on it. The wax makes into the threads and acts as a lubricant. An old bloke told me about this when I was an apprentice in the early 80's. His reasoning was any liquid penetrant burns off to quickly. Wax stays put.

x 2 for the candle wax, I've heard it works well.

[davegmh]

Anyone used 'Wool Fat' as a lubricant.?