HEST light on too often...

[Brock]

I have a eaton autoshift and that's where it'll bring it up to on a hard pull. if I were driving a stick I wouldn't shift by 1600 with this kind of weight because I'd spend all day lugging my engine. You shift at 1600 with 140k while climbing and you'll find your next gear starting at 1100 wishing you hadn't done that.

Truck has a million miles on her and always ran this way and always ran this weight.

Once you start hauling this kind of weight, the rpm range you operate in changes. Cat is a good example..... at this weight, cat recommends 1600 to 1700 as a cruising rpm.