Well gee... I spend so much time pumping it out of the trucks DEF tank every Spring it's kinda' hard to tell.Generally speaking, how many gallons of DEF are you going through per year?
My 2015 is very similar. If I'm on the highway (loaded or unloaded), it seems to go forever before I see a regen. I see a regen approximately every 100 - 120 miles with strictly in-town driving.One emissions fun fact I can tell you is that when the camper is loaded on the truck and I'm on the highway the truck does not do regens. It simply doesn't happen.
(Post turbo EGT's are usually between 800 & 950F under those conditions)
If I take the camper off the truck and run into to town to sightsee you can be sure she will regen... frequently.
When you have as much money as @Electrojake, issues like these are trivial.@Electrojake, a buddy from Arizona called me today to tell me about the DEF refractometer he recently bought. He's the one with a 2012 Denali Duramax with a whopping 27,527 miles. His concern was knowing when to drain the DEF due to time and heat. His urea concentration read 35%. Good DEF should be in the 32% - 34% range. Even though his truck sits in the garage, the temperature today hit 100*F inside the garage. Anyway, I was wondering if you use a DEF refractometer to determine when to drain, or if you drain based on time?
That comes out to a 77.41% increase....DEF prices have been going up! SuperTech is now $13.98. I went back to my 2019 records and saw that I was buying SuperTech for $7.88!
Let me clear that up for you. . .