I haven't found it cause any problems, it's great metal prep for rust prevention, but also best practice when starting to shoot paint is to wipe down with a grease/wax remover immediately beforehand
"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