Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post - What is your MPG with Diesel truck and 5th Whl

Cyrus · 07-13-2008, 03:37 AM

I don't think you have given enough information to get an answer to your question.

You will have more wind drag with the 5er then the trailer for one thing. Depending on the trailer size you have now there could be more weight in the 5er also. I pulled a 24 trailer with my truck and didn't know it was back there except for the sway from the trailer and it dropped the mileage, don't remember the amount. I now pull a 35ft 5er weighing around 15,000 and it drops my mileage from 17 to about 11-12 except on mountain roads then it's more like 9-11. The 5er does not give you the sway that a trailer does and since it connects over the truck wheels the impact on truck ride is much less. The 5er is a much better pull, like it's not there compared to the trailer.

07-13-2008, 03:37 AM	#55
Cyrus Montana Fan Join Date: Nov 2006 Location: King George Posts: 356 M.O.C. #6535	I don't think you have given enough information to get an answer to your question. You will have more wind drag with the 5er then the trailer for one thing. Depending on the trailer size you have now there could be more weight in the 5er also. I pulled a 24 trailer with my truck and didn't know it was back there except for the sway from the trailer and it dropped the mileage, don't remember the amount. I now pull a 35ft 5er weighing around 15,000 and it drops my mileage from 17 to about 11-12 except on mountain roads then it's more like 9-11. The 5er does not give you the sway that a trailer does and since it connects over the truck wheels the impact on truck ride is much less. The 5er is a much better pull, like it's not there compared to the trailer.