mep - I used PAM the first time I seasoned mine and found I was still getting a little rust build up around the seals and on the inside of the door. Recently re-seasoned with a light coating of bacon grease (plus a little light sanding) and I think it's working better - so far. However, YMMV!
Head Groundskeeper - Squirrel Haven Estate, Lenexa, KS
Chief Cook of the infrequently competitive Fullwood Bros' BBQ Team
Cigar Lounger, Malt Beverage Tester
Owner/Operator of: Superior "Stealth" SS2, Brinkmann "Lefty" Bandera clone (retired), Comalco Black Dog grill, and various Weber kettles.
World's fastest Belgian/Cuban Racing Yellow thermapen.