2018 2500 Fuel Economy

[IAMMAC]

My 2018 RAM 2500 has 106K miles and in the last few months my fuel economy has gone down. I was getting 14-15mpg and now I'm getting 11-12. I've used two of the OTC fuel system cleaners and they haven't helped at all. Any suggestions on getting it back to where it was? Thanks.

Greg

 

[mtofell]

Unlikely to be anything wrong with the truck if it's sudden and you're not getting any codes, smoke, etc. Very likely to be winter fuel, wind and/or some bad luck driving conditions. I've had the same thing happen with my 6.4 over the years and it always comes back to normal. These trucks are so advanced these days that's it's pretty much impossible for them to just be ******* fuel somewhere without getting a code or smoke or something.