Could be. It drops from 6th to 5th then rpms drop again but still in 5th. Not every time just when unloaded and lightly throttling up a hill. I've heard about people with older diesels say it's like an over drive/direct drive or something then 6th is just a complete overdrive gear in its own...

I've noticed on mine that 5 th gear seams to act like it has a splitter, like in a big truck. When pulling a hill instead of shifting completely down to 4th its like it drops half a gear and stays in 5th. Anyone else notice that??Sent from my XT1585 using Tapatalk