Gas vs. Diesel (Ecodiesel)
I read this topic quite a bit here so here's PUT.com attempt to pencil whip the cost of ownership comparing some gas engine trucks to the new RAM Ecodiesel truck. Link Enjoy...
Forum Discussion
Turtle n Peeps wrote:
And before anybody jumps on the 4 speed deal, my diesel, just like almost every diesel in the world has a Broaaaaaaaaaaaaaaaaaaaad torque curve so I don't need 6, 8 or 14 speed to keep it in the torque curve or power. With a double overdrive about the only thing a multi speed tranny does above a 4 speed is get slightly better fuel mileage anyway.
Nope. HP is a function of torque and RPM. If you don't have a gear that will allow you to maintain peak HP RPM at WOT, you ain't making peak HP. Don't care if it is gas or diesel.
Your 4 speed is a 3 speed with single overdrive. The 8 speed is a 6 speed with double overdrive. It has twice as many ratios as your 4 speed before it even gets to overdrive and it has twice as many of them.
