Solvent resistant refinish paint composition and method of applying same

A method for refinishing a substrate surface comprising:

• preparing a refinish primer composition comprising an organic solvent based dispersion having a solids content in the range from about 45 to 70% by weight, wherein said solids comprise:
• from about 10 to about 50% by weight of crosslinked acrylic polymer microparticles having a diameter of 0.1 to 10 microns which are insoluble in the organic solvent and are stabilized in the solvent system by steric barriers;
• from about 30 to about 60% by weight of an oxidatively-curable resin;
• and
• from about 15 to about 40% by weight of one or more additional ingredients selected from the group consisting of corrosion inhibitors, inert fillers, pigments, surface builders and mixtures thereof;
• applying said refinish primer composition to a substrate surface to form a protective layer;
• applying on said protective layer, when said protective layer is tacky, a primer surfacer composition comprising an organic solvent, an oxidatively-curable or plastic resin and an inert filler to form a refinish primer system having an overlaid primer surfacer layer on said protective layer;
• smoothing the overlaid primer surfacer layer without using a heat treatment as soon as said primer surfacer is dry to touch, such that the smoothing step is carried out while said refinish primer system is uncured;
• applying a topcoat on the smoothed overlaid primer surfacer layer;
• and
• allowing said refinish primer system to oxidatively cure.