I recall a thread posted here some time back where a group had done some testing on penetrants. Seems they took identical bolts & rusted the nuts on them under identical conditions. They then used various penetrants & recorded the torque necessary to break the rusty nuts free. First place went to a 50/50 mix of Dexron ATF & Acetone, with Kroil coming in second. I don't recall
oil of Wintergreen being in the test, so of course no conclusins on it can be drawn from that test.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra