Good luck. Seems like a good moment to repost these test results on penetrating oil. The homemade stuff was best, but is wicked flammable.

"For all of you that are mechanically inclined..... Penetrating Oils Compared A study done by Machinist's Workshop magazine in their April 2007 issue looked at different penetrating oils to see which one did the best job of removing a rusted bolt by measuring the pounds of torque required to loosen the bolt once treated. If the study was scientifically accurate, it turns out a home brew works best! Here's the summary of the test results:

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 Automatic Transmission fluid (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. "

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David.X5
2001 X5 4.4i Sport
SOLD! at 160k miles