really the 'best' thing on bare metal is epoxy primer. but you'd need to sand off that rattle can stuff, which really should be done no matter what you put on .... epoxy primer is the only sealer coat you need, and if you go beyond its re-coat window a good scuff sanding will have it ready for whatever you choose for the next step, like a sanding primer - and always best to stick with the same brand at each step

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics