My 5.0 gets about 18-19 normal. I did a trip to the mountains last weekend with a half a cord of wood in the back and got that up. Down? 23. And that's the best I've ever seen that # climb yet
2018 F150 XLT Sport Supercab 2.71968 Ford Thunderbird 2 door Landau 429 Thunderjet V8 1 of 950
Past: 16 F150 5.0 , 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0