I have an old barn that looks great,especially since I keep up with the painting. It is the traditional red with white trim. I have always used a linseed oil based paint made by Valspar and with proper prep the paint job lasts a good while. The problem I'm having now is that New York state no longer allows the oil based paints. Valspar now has a latex barn paint which is fortified with Linseed oil. I'm reluctant to switch to this as this painting and prep is a lot of work to do to have to use an inferior product.I have always been told that oil paint is vastly superior to latex for exterior work,especially for an old ,weathered building in harsh conditions such as mine.The alternative would be to travel out of state for the other paint.Also, can I paint latex over oil without a ton of sanding? Your advice and comments please ?