Ran across this on one of the threads
Predictably irrational : the hidden forces that shape our decisions
by Ariely, Dan.
Read the first few pages online and decided to just reserve the hardcopy.
I've always used 90W gear oil in gear boxes. The heat produced by the
friction of the gears running in the gear box will cause the heavy oil
to flow freely and it really sticks to the gears fighting friction a lot
better than that puny 30W oil. ^_^
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