Bighurt
Well-known member
Big, the 62 MPH is for California. Once out of Ca. I usually set about 68-70 depending on the terrain. I like to keep the RPM's about 1650-1750. The fuel mileage is better. I don't have as much downshifting at those RPM's.
I try to keep mine around the 1800 mark which in the flat land of ND usually means 70. A month or so ago I was hauling near 16K west on I-40 into Cline's corner NM. I was burning fuel like it was free all the way west, managed 65 till Amarillo then the winds were to high and I had to cut back to 55. NM was evil though saw EGT's near max pulling the grades...smoked out a few Prius owners which made my day. Only had to kick cruise out once as the TCM didn't get to a shift point and she went dropped a gear while in overdrive, that probably doesn't make sense but neither did the resulting effect. Needless to say I never duplicated the event.
Still I like to hit a grade in Cruise and see what the TCM wants to do, if I don't agree I kick her out while I have the throttle and back her down. Of course hauling with a race tune isn't a good idea either.
Moral of all stories is that the Driver is in control, just like spell-check the computer is only as good as the guy who wrote the software. Can't tell you how many kids drive with cruise here in the winter and wonder why they were in the ditch. The word Smart should never be placed before the nomenclature of an inanimate object. And cruise control should come with a disclaimer.