The Following suggestions are for using PAM, as I have no experience with Coconut Oil:
Prior to applying oil, take the piece up to 500°.
Remove carefully (100% cotton terry towels folded over work well)
PS... remove all labels and tags... guess why... (voice of experience on melting tags onto CI) ;D
Place in/on large cardboard box/surface... (think pizza box)
Spray with Pam... Lots of smoke is good. Think Carbonization on contact.
Wipe with scrunched up paper towels... wipe again.. wipe again...and again... (Bounty Paper towels rock)
Return to 500° oven for one hour...hope you live alone, the smoke can create relationship problems........ 8-)
Repeat for second coat.
Report findings promptly! ;) ;)