DEF Issues
I drove a RAM 2500 diesel for 12 years until I upgraded to a pre-owned 2014 3500 diesel earlier this year. I knew nothing about DEF when I bought the "new" truck in March. My first introduction to D...
Forum Discussion
dedmiston wrote:
Interesting consensus from all of you on the exhaust brake. I use it whenever I tow, but rarely use it otherwise. It seems like the exhaust brake scrubs off enough momentum on the downhills to negatively impact fuel economy. Maybe that's in my head though.
What about DEF usage when towing vs. not towing? I don't really notice the gauge drop very much, but it seems to drop quicker when I'm towing. I can't tell if that's real or if it's just in my head.
I believe that's normal consumption for DEF as mine also uses considerably more when towing. When not towing I hardly use any. Haven't experienced any warnings though and I've filled mine when it was about 1/2 full. Usually fill DEF up when starting a trip regardless of how full it is. I always carry 2.5 gal with me just in case...always buy mine at wally world.
