Do you have any more info on this? It's REALLY interesting, but I'm
surprised PB Blaster doesn't do much more than WD-40- so I want to know
what their methods are. I love that the cheapest thing on the list
actually works the best by far!
My experience is that PB Blaster works really well, but needs a very
long period of soaking (overnight, or even a week) to work properly.
When I take an exhaust manifold off, I'll usually soak it everyday with
PB for a week before the job, and the bolts will feel nearly hand tight
at the end- when I'm certain the studs would have just broken off
without the PB Blaster.
Tyler
LarryT wrote:
Found this on a MGB list I'm on. Don't know how scientific it is but it seems
convincing.
Here's some interesting
comparisons on penetrating oils.
Machinist's Workshop magazine actually tested penetrates for break-out
torque on rusted nuts. 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 Oil and Average Load*
Nothing..................... 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. Note also that "Liquid Wrench" is about as
good as "Kroil" for about 20% of the price.
Take care -
Larryt
74 911
91 300D
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