Anyone notice that Pennzoil YP jugs actually are 5 quarts.A friend that owed me some $,I ask him to get me two gallons of Pennzoil ($10.50 at Walmart) thinking it was a gallon.The truck hold 6qts.But the container says it's 5qts.While the GTX I use in the car are gallon containers.Also the jugs are a better valus compared if you buy the quarts.