Paint question

You have to pay attention to the mix ratio that the manufacturer calls for. If they call for a 1:1 mix ratio of basecoat to reducer, then that gives you 2 gallons of material. 2:1, 4:1 etc give you less but all brands don't cover the same.

PPG Shopline doesn't cover as well as other basecoats. A seasoned painter can probably get away with a gallon for the whole car with Shopline but a newbie like me would possibly need an extra quart just to be safe.