"Tool in a Can"

[Shadowdog500]

wait, what's better PBlaster or Kroil? Or are they the same.

I've never had much luck with PB Blaster

This has been floating around the web since April 2007. I don't have a link to the original article.


Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as forwarded by an ex-student and professional machinist, Bud Baker.
Don't forget the April 2007 "Machinist's Workshop" magazine comparison
test.

*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. Our local machinist group mixed up a batch and we all now
use it with equally good results. Note also that "Liquid Wrench" is about
as good as "Kroil" for about 20% of the price.

 

[blivitt02]

I buy whatever is on sale usually (mostly gallons of WD when they go on sale) but I also can get Knock'er Loose pretty cheap and It works great! (Made by CRC I think)

 

[MrMark]

Funny that plain old Liquid Wrench works about the same as the Kroil that everyone seems to swear by.

 

[lipadj46]

Funny that plain old Liquid Wrench works about the same as the Kroil that everyone seems to swear by.

yeah but kroil smells better.

 

[MrMark]

If I had some really rusted nuts, I would probably go buy the CRC or Wurth freeze spray. I'll bet that is the way to go.

 

[strnjss]

This has been floating around the web since April 2007. I don't have a link to the original article.


Machinist's Workshop magazine actually tested penetrants for break out torque on rusted nuts. Significant results! They are below, as forwarded by an ex-student and professional machinist, Bud Baker.
Don't forget the April 2007 "Machinist's Workshop" magazine comparison
test.

*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. Our local machinist group mixed up a batch and we all now
use it with equally good results. Note also that "Liquid Wrench" is about
as good as "Kroil" for about 20% of the price.

That's awesome thanks!

I'm very surprised by these results, WD-40 and PB Blaster are not too much different in this test.

I always thought that PB Blaster was supposed to be one of the best, but apparently I should be getting some Liquid Wrench instead, or
I think I'm going to go mix up some 50/50 ATF and Acetone since it reduced the torque needed down to 10% of dry. That's incredible!

 

[Racr350]

Castle Products all day! Shop-Solv as a solvent and Liquid Torch or Thrust as a penetrating liquid.

 

[csp]

There's more to a penetrating lube than just the torque required to remove a rusty nut.

They have to be able to penetrate into the joint. Kroil does a far better job than PB Blaster, IMO. WD40 is a joke when it comes to getting into a crusty joint.

How do you do a standardized test on rusty nuts and bolts anyhow? You can't tell how much corrosion is in one connection vs. another.

 

[Danglerb]

Rost off, HHS2000, Kroil, and best smelling Marvel Mystery Oil.

Worst smelling, can of environmentally nice soybean stuff, wow does it stink, and not a good stink either.

 

[holden26]

Lubex isn't bad