Tag Archives: DIY

Penetrating oils

Rusty Bolts

Copied a post from Daniel Sartin on facebook.
“One of the best “Tricks” I’ve used on stuck fasteners is a mix of ATF & Acetone mixed 50/50…  ”

Machinist’s Workshop Mag ™recently published some information on various penetrating oils that I found very interesting. Some of you might appreciate this. the magazine reports they tested penetrants 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 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.