Rusty's GUIV-Upgrade

[jack]

ok so i discovered a problem over the weekend. i was out 4wding and at the beginning i went to take out my tow hitch. turns out the bloody thing is rusted in their solid!!! does anyone have any clever ideas about how to get it free so it can be replaced as at the moment i can only see it being a hazard...

Hi mate, here's some interesting Info I read - worth a try (only found this after I threw out 5 litres of old ATF)
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Machinist's Workshop magazine tested penetrants for break out torque on rusted nuts with significant results!

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.
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I think that Irish also had a post on home brew penetrating oils in the hunters thread a while ago.