Originally Posted by Dugg
. It was a shot at trying to jack the price of spirits.
Actually the companies are not to blame on this one as it was not so much a price scheme (not that they are not guilty of doing that!
) but was a mandate from the EPA to meet air polution regulations for paint thinners. That oily residue does not evaporate but will still thin the paint somewhat thus there will be less solvent evaporated into the atmosphere, at least that's the idea. With paints that are required to use a mineral spirit based thinner it is better to use the 100% spirits and leave the "thinner" on the shelf, you will save a few bucks and get a better product.