Dodge Cummins Diesel Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
133 Posts
Discussion Starter #1
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
 

·
Registered
Joined
·
565 Posts
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.
 

·
Cummins Fanatic
Joined
·
880 Posts
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.
 

·
Tech Specialist
Joined
·
725 Posts
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.
:popcorn:
 

·
Registered
Joined
·
1,717 Posts
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.
 

·
Registered
Joined
·
788 Posts
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.
 

·
Registered
Joined
·
133 Posts
Discussion Starter #8
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.
 

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

Bill
 

·
Cummins Whisperer
Joined
·
796 Posts
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.
 
1 - 10 of 10 Posts
Top