Dulamel -vs- Impervo

Impressed you can still get Dulamel. VOC eliminated it for us 3-4 years ago. Dulamel had 2 finishes. Eggshell ans Semi. Both great products. Eggshell mediocre hide but outstanding finish. Semi gloss like glass but high amber tendency. Can't use XIM Extender in an alkyd. Try penetrol. Penetrol increases the solids but slows the dry and helps leveling. It also will contribute to ambering. Fine Paints of Europe makes a very high quality mineral spirit that thins the product and dramatically improves handling. Because it is so pure, you you so much less and don't effect the solids too much. FPOfE thinner is very expensive but you use so much less it is very economical. Most cheap thinners are 50% water and not very strong therefore you use more and compromise the film by reducing solids in the final cured film.