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Hello, reading and learning. Own a 2011 1 ton dually Cummins but time to down size. Test driving an eco diesel 1500 ram quad cab tomorrow but find the sales people product knowledge is limited at best so will put forth questions here. May order built an SLT Quad cab with 3.55 gears. What's the difference between the express and SLT? 3.55 Gears best for fuel economy? I'll be towing an 11foot tall 5k lbs travel trailer once per month for about 380 miles and with one cross country round trip per year west coast to east coast. Rest daily drive. The transmission is an 8 speed automatic but I read of people shifting gears? My 1 ton has a G56 manual so shifting not a problem. So my questions;

Express vs. SLT?
Transmission shifting?
3.55 gearing best economy for 5k lbs?

Thanks

David
San Diego
 

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Hello, reading and learning. Own a 2011 1 ton dually Cummins but time to down size. Test driving an eco diesel 1500 ram quad cab tomorrow but find the sales people product knowledge is limited at best so will put forth questions here. May order built an SLT Quad cab with 3.55 gears. What's the difference between the express and SLT? 3.55 Gears best for fuel economy? I'll be towing an 11foot tall 5k lbs travel trailer once per month for about 380 miles and with one cross country round trip per year west coast to east coast. Rest daily drive. The transmission is an 8 speed automatic but I read of people shifting gears? My 1 ton has a G56 manual so shifting not a problem. So my questions;

Express vs. SLT?
Transmission shifting?
3.55 gearing best economy for 5k lbs?



Thanks

David
San Diego
Kbb.com has a good comparison chart for different trim levels. No paddle shift but does have shift control on steering wheel. 3.55's will probably net 2-3mpg advantage unloaded & 5k is well within tow capabilities, however, 3.92's will perform better while towing. I'd personally opt for 3.55's unless you're towing in hilly terrain. You'll probably get pros & cons on both gear sets.
 

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I just got back from a 323mi round trip towing about 1 000lb tailer with 3ft sides. I have 3.55 gears. 80% hwy but local highways so speed was between 53 and 56. About 2/3 was on really flat roads. my average was 23.5 mi/usgal. for us Candaian foke 26.5 or 10.0L/100. I'm happy with that as this is a full size truck. I traded a 2013 pathfinder that was worse than that the last time I took the same trip, not by a lot tho.
 

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If you are doing a lot of highway driving empty 3.55 will save you lots of cash long term. If you are mostly in town towing or empty you may be happier with 3.92 for a little more performance and not much difference in mpg. Towing that little and the 3.55 will do fine and save you money. My 2 cents
 
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