Volvo DEF consumption

Most trucks don’t use a lot of DEF…

this freightliner gets DEF once a week running 2500-3200 be around a half or just little less.

 

They make different sizes of def tanks so just saying your gauge says half or three quarters means nothing.
Write down your miles the next time you fill the def tank and then do the math the next time you fill up.
That’s the only way to know.

 

This from Cummins, should be similar to yours. Updated from the 2% Cummins said in 2009.
DEF consumption will vary depending on the environment, operation and duty cycle of the equipment you are using. On average, DEF consumption is 3-5% of your total fuel consumption levels.

 

Friend of mine works for a company has Volvo daycabs. Says the colder it is, the more def it uses, in summer it's much less. Fleet of trucks they all do the same thing.

I have an isx and it is about 4% of fuel consumption.

 

I hope that's true because my Volvo has been using a lot more this winter. I recently did DPF cleaning, a few new sensors, pipes,etc. and it's still using more than it ever has. My mechanic says about 180-200 mpg of DEF is normal. I used to be at tht but lately it's about 160 which equals to a DEF fill about every third fuel fill, or 2500 miles. I think the tank is 15 gallons but I try to not run it to empty.

I plan on having him check things out and do a Nox sensor calibration next time I'm in for service.

 

What’s the outside temperature been?
My Detroit used zero DEF fluid when the temperature got below about -25. Cummins about the same.
Volvos in our fleet did use more.

 

Volvo D13 to consume very little DEF. The D13 engine is designed to be very fuel efficient, and it uses a combination of advanced technologies to reduce emissions and improve fuel economy. As such, DEF consumption should be relatively low.

 

@86scotty
Ever change the def doser? (And dpf doser)

I change mine about every 300-400k km. They haven't given me any issues before that, they always were a bit gunked up, carbon on the 7th injector and white crystals around the hole the def nozzle sits in. Could likely get more life out of them, but to me, it's peace of mind. Haven't had any serious emission issues yet. *knock on wood* I carry a box of sensors which has come in handy twice. Nox sensor and I think it was egr pressure or temp sensor I can't recall. Fix it myself ecm resets after x trips or distance.

@uncleal13
The company he works for only runs between sw ontario and Ohio. It is almost never even close to -25 here. He wouldn't know what they do in that cold. I've only ever had my current truck that uses def, it also cuts off the def at about -25.

 

About 2.5-3 tanks of fuel to my 1 tank of DEF with a 23 VNL 860 D13 500 HP