Npd9769
Junior Member
I have a 2019 Laramie Longhorn and I have two questions. How big is the def fluid tank and I have to refill mine about every 1,000 - 1,200 miles, is this common. Only about 200 miles of that is towing. My buddy owns a 2019 Ford F-250 and he says he doesn't use nearly that much def fluid.