Its been discussed several times but I wanted to add this. I have a 2019 Ram and I ordered the larger gas tank. I had a 2013 with the larger tank and the gas gauge always read as the smaller tank, thus leaving 5-6 gallons in it when it reads empty. I could never find out if the new series trucks were ever fixed to read accurately. Today I was around home with an empty tank so I ran it until it said it had 15 miles left. I filled it and it took 30.2 gallons. That's pretty much accurate for most tank gauges. They must have calibrated the new trucks closer. I would call that just about perfect, leaving about 2 gallons. I always wondered if I still had a large cushion or not. Now I know and others with the 33 gallon tank hopefully do too. This Ram has just been perfect for 30,000 miles now so I should have guessed the fuel gauge would be too.