The 8 speed works as it should....seamlessly. It keeps the engine operating at about 1750 RPM at 45, 55, and 65mph steady state. I'm at almost 5000 miles now averaging 15.4 on Fuelly. That is 1.5 mpg more than my 2016 392 and a 6 speed. I am very pleased with this truck.
On a side note, I...