[firefighter343]

Im buying a 2001 ctd dually has 4 10`s it is a 5 speed and he says it gets 17 mpg. My father in law says no way he gets that much could you explain why he does or does not get that

 

[Tec]

It's totally possible, I've got an Auto dually with 4:10's. The best I've gotten is 17.5 MGP driving under 60mph on the hwy.

 

[salesrep]

I have 410's and get 16 to as much as 18 driving if i keep it at 1800 rpm's.

 

[upinsmoke53020]

Check out the truck in my signature. 4.10's, never drops BELOW 17 even when I'm towing. Normally huvers around 19 just daily driving. It's totally possible. Your father in-law must not be a diesel guy.

 

[WorkhorseDiesel]

With 33 to 35" tires, it is very possible. With stock tires, it will be from 14-16 mpg. So, definitely check the tire size. If he's got 285's or 315's on it, then he's probably right on with that mileage.
opcorn:

 

[BigB82789]

4:10's, auto, 33's (well, more like 31.8's now)= Best recorded 17.1 MPG city and highway. Truck was stock. I haven't checked since I've added tranny, and electronics.

 

[Crazytexan]

a 4:10 will run 70mph ABOVE 2000rpms where MY 3:73 will run 80 at 2000rpms. The 4:10 is for heavy towing, or racing, or wherever more RPM's are needed.

 

[firefighter343]

thanks this is good to hear My father in law has a 1999 3/4 ton with edge box, he has 355 rear end and gets 18 empty and 13 pulling so he is just not happy that i will get better mileage.

 

[Bill1374]

With the EZ, 19 highway, 15-16 around town and 11.5 towing at 20 thou gross combined.

Bill

 

[mojo1578]

I have 4.10's and an auto. My all around mileage usually comes in around 17-17.5 with 33's. I've never checked just highway or city mileage.