The sequence is this----First wipe the Tank over with Acrylic Thinners using a lint free cloth,
Then paint the metal surfaces with metal (Etching )Primer
Depending on the state of the tanks bodywork paint the tank with either "Mr Primer Surfacer 1000" or if it is full of gaps "Mr Primer Surfacer 500",Carefully Cut back the finish with "FINE" Emery Paper.
follow that with a coat of red oxide primer/undercoat then comes the topcoat followed by the weathering.
AND DONT RUSH
