Originally Posted by daved5150
The reason I believe they are going with more gears is to try to get as much mileage out of the New trucks as possible. With more gears, the engine stays in the power band and uses less fuel because the 6.7 doesn't have to work so hard because of less RPM drop. Just my 2 cents. But my 16 feels pretty good with the 6 speed box. I do wonder how it would roll with 2 extra gears though...
the line?
Originally Posted by daved5150
I bought an extended warranty for my truck, 7 year or 125k mile, thinking that would extend the emissions warranty. WRONG. I found out the emissions warranty only goes to 50k. What a kick in the b*lls. It is what it is. I really haven't discussed it yet with my dealer. I'm doing research now on deleting. Down the line, if start having any emissions related problems, I plan deleting. While I do like the truck as it is, stock, I wouldn't do it to add huge power or blow black smoke. Those coal rollers are idiots. They give all diesel truck owners a bad image. I would do it to gain engine reliability and hopefully gain some MPG.
The funny part is that an Allison automatic for a bus/garbage truck currently only has 6 gears, but their new torque converter based "automatic" with gears like a manual has 10 speeds. Rumor has it that besides the new 10-speed HD Ford tranny, GM is releasing an Allison "branded" 9-speed which isn't at all built by Allison. If big rigs and tour buses are using AMTs like the ZF ASTronic or one of the Detroit/Mercedes or Eaton ones, why can't a heavy-duty diesel pickup? The Allison TC10 is almost like a Honda automatic in how it operates.
While I do like clean air, I think some of the emissions controls for diesel engines need the truck to be driven regularly(on the highway) to avoid regen loops or lockouts and EGR on a diesel can cause more harm than good by introducing more particulate in the oil. I don't own a diesel and if I ever did, I'd be keeping tabs and doing appropriate tweaks to improve reliability. While states adopting California emissions standards also require cars to carry a 10/100K emissions warranty, looks like trucks don't have that same coverage. I understand why diesel truck owners love their trucks and have a diesel - they actually haul and do work. Not to roll coal to show off their insecurities.