John from Las Cruces writes
According to the manufacturer, you should not spray diesel in the Chapin Premier 2 Gallon Sprayer (#21220XP). We do not recommend that you use gasoline or ethanol in any sprayer because of their flash points. We did speak to the manufacturers of the two lines of sprayers we carry and both said that while they cannot truly recommend a sprayer for your needs because of liability issues, some professionals do use the Chapin 3.5 Gallon Concrete Sprayer 1949 to spray diesel fuel.
Answer last updated on: 06/21/2019
