The amount used will be determined by a number f factors. Of course, more DEF is used while towing or otherwise placing a load on the truck. Allowing the level in the tank to drop to ~1/4 (or maybe even a bit less) is a good idea, so the freshest mixture DEF can be maintained.
DEF - Usage
I read a thread on a travel trailer forum that was discussing DEF. The people were saying they are getting about 1500 miles for their DEF tanks, about 2.5 gallons. That seemed to be the norm they were reporting for their 2500 and 3500 trucks.
I just put in my third box of DEF in my 2500 and I have about 12,000 miles. So I figure that is about 5,000 miles for a 2.5 gallon box. I don't put any more than one box in at a time and only put it in when the gauge shows it is almost empty.
I just read a thread on this site, from 2017, where someone said you should get about 5,000 miles on 2.5 gallons of DEF. That same thread said to turn off or change the amount of DEF used. Is that on older system of DEF that can be turned off or amount adjusted?
I just put in my third box of DEF in my 2500 and I have about 12,000 miles. So I figure that is about 5,000 miles for a 2.5 gallon box. I don't put any more than one box in at a time and only put it in when the gauge shows it is almost empty.
I just read a thread on this site, from 2017, where someone said you should get about 5,000 miles on 2.5 gallons of DEF. That same thread said to turn off or change the amount of DEF used. Is that on older system of DEF that can be turned off or amount adjusted?
1 - 1 of 6 Posts
1 - 1 of 6 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
DODGE RAM FORUM
We’re the ultimate Dodge RAM forum to talk about the RAM 1500, 2500 and 3500 including the Cummins powered models.
Full Forum Listing
Top Contributors this Month
View All
Chief05
255 Replies
NevadaMike
236 Replies
airforce26yrs
61 Replies
Recommended Communities
