How to seperate corroded alumimum oar?

I just purchased a used pontoon that came with two part aluminum oars. One of the oars has corrosion in the joint and I can not get it to seperate. Any suggestions / ideas?


Ignored Member
Penetrating oil like WD40 or Liquid Wrench sprayed liberally on the joint then let it sit for a couple of hours. Perhaps a little heat from a heat gun or hair dryer would help also.