I use the cheapest flat black rattle can paint [local, about $4-5 a can] on rads and haven't had any problems with clogging fins or flaking paint ... and I leave the original brass top tank 'au naturel' to develop a nice patina

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