Lube the door?

[Bosco]

My door has a stiffy.

Er.. um... I mean...

My passenger door is stiff and somewhat difficult to close.
It takes easily 3 times the effort to close as the driver's door.
Any suggestions for lubricants I should use (or NOT use)

I'm sure I'll try to lube everything that moves in there.

Hee... I said stiffy... and lube.

[LaureltheQueen]

try silicone lubricant. you can pick it up in a spray can in the chemical section of your local auto parts store(cskauto)