My 6 pound lead hammer was not breaking my knock-offs loose and fearing
I might break or bend an ear I decided to use penetrating
oil. A search for
"best penetrating
oil" rated all the commercial products and then said that
the best was a home brew of 50/50 ATF and acetone. I mixed a bit and using
an eye dropper, applied it to the joint where the Knock-off meets the wheel.
It worked. You can substitute baby
oil, mineral oil or cooking oil for the ATF
but the ATF is said to be better because it contains detergents. In any case,
apply liberally and wait about 10 minutes...then apply the big hammer. It
worked for me.