Residue from Thinners Paint Sticking ?

They are spotless , fresh hot vat followed by hot soapy water , blow dried and coated with WD-40

They are in the sealed engine building room and I can heat the room , motors and paint to a constant 80 degrees (?) for 24 hrs prior to painting.

My question is will denatured alcohol or lacquer thinner work to get the WD-40 out of the pours? or is there a better thinner I can get locally ?

I use a lot of xylene in the metal fabrication production but it seems to have an oily residue . Our primer will fish eye if the xylene isn"t completely wiped of the steel , so I"m guessing that"s a no go.

Thanks in Advance - Ken(Ark)

I was not planning on going to the big town for a while so I was wondering if anything at the local hardware store would work .

Thanks for the advice , I'll try it before the next batch of motors - Ken(Ark)

I would use regular paint. The engine doesn't got to hot for that paint except at a few places like manifold.