How Much DEF is your D13 Burning

there is no "engine running clean", if it is burning diesel fuel or any hydrocarbon based fuel it is producing some level of emissions. DEF system's ONLY purpose is to reduce nitrogen oxides (NOX) and there is no way your engine is not producing those. The only way I can see that you used zero DEF is if someone did some kind of delete on the truck.

 

Did you try putting some in tank to see if gauge is broken .. d13 is a common engine for the def delete

 

On average $25-30 a week in def, for an average 2500-3500 miles. Depending on how heavy the loads are. Try filling the def tank full and then 1000 miles later top it off. To see how much you used. Most Volvo’s have 70L def tanks. They all use def unless delete was done.

 

That would depend on who did the programming. There is no "official" software to do deletes, most are really just hack jobs from files downloaded on the internet.

 

Sounds like your DPF system might have been deleted. I would check the DPF area to see if any changes have been made to the wiring harnesses etc. Look for a black box and any removed or cut wiring harnesses. If you drove that distance and no codes came up well it might be ok, but might not. Where did you buy it from (if you did buy it) because normally dealers won't touch a deleted truck and if you bought it privately I would hope you either knew the history or had it inspected. If it has been deleted you should have been told.

Anyways hope it works out for you.

 

Well a somewhat normal DEF usage is usually anywhere from 200-350 miles per gallon. Did you buy it from a Volvo dealer, or just a place that sells trucks? No manufacturer's dealership would knowingly sell a truck with a delete. I'd like to know if that is the reason, or something else. There is no other way I can imagine not using and DEF and not having errors and the engine going into a derate mode. Keep us updated if you figure it out.