Who has used it and is it ready to spray or do you need a reducer for it?
PPG Duracryl
DDL94012
If it's still some of his older mix, it'll be acrylic lacquer and you will need a THINNER, if he's switched it over to Acrylic Enamel like some of his other paint products, then you'll need a REDUCER, whether your using thinner or reducer be sure to use the slowest drying you can, avoid heavy coats, 3 to 4 light coats, some will suggest to spray it over a primer base, avoid that temptation as you won't like the results, I paint directly over the gloss finish after scuffing it down lightly with a RED scotchbrite pad, IMHO your better off using the Acrylic ENAMEL Organisol substitute from PPG to avoid any paint reactions (unless your vehicle is painted in acrylic laquer?) lacquers don't like being put over enamels/urethane/etc, you can do it, but sometimes there's immediate paint reactions or perhaps down the road expansion contraction of the different paint bases will cause cracks/checks/lifting... just some forethought
Mike