AdBlue® used to be something only truck drivers dealt with. Now many diesel utes, SUVs, vans and cars use SCR systems too, and owners are often surprised by a dashboard message asking for a top-up. The good news is that light vehicles use far less than trucks, and topping up is easy once you know what to expect.
How much a light vehicle uses
A diesel car or ute typically uses roughly 1–1.5 L of AdBlue per 1,000 km. That is around a tenth of what a heavy truck uses over the same distance.
In practical terms:
- A ute covering 20,000 km a year would use somewhere around 20–30 L a year.
- A work ute towing heavy loads, or driving mostly in the bush, may sit at the top of that range or above it.
- A car doing mostly easy highway kilometres may sit at the lower end.
As with trucks, consumption depends on load, towing, terrain, idling and how the manufacturer has calibrated the engine. Your owner's manual will give the AdBlue tank capacity and, in many cases, an expected range per fill.
How often you'll need to top up
Light-vehicle AdBlue tanks vary widely in size, so refill intervals vary too. Some vehicles are set up so the tank roughly lasts between services; others need topping up between services, especially if you tow.
Most vehicles warn you well before the tank is empty, often with a range countdown on the dash. Don't ignore it. If the tank runs dry, the vehicle may limit power or prevent the engine restarting until it is refilled. Our AdBlue FAQs cover warning messages in more detail.
A useful habit you can start today: note the odometer reading next time you top up, and again at the following top-up. Divide the litres added by the kilometres travelled and you'll know your own vehicle's real consumption, which makes it easy to predict the next fill.
Filling a car or ute cleanly
The AdBlue filler is separate from the diesel filler and usually has a blue cap. On some vehicles it sits next to the diesel filler, on others under the bonnet or in the boot. Never put AdBlue in the diesel tank, and never put anything but AdBlue in the AdBlue tank.
When filling:
- Wipe around the cap before opening it so dust doesn't fall in.
- Use a clean, dedicated spout or a drum with a built-in pour spout. Don't use a funnel that has been used for oil, diesel or coolant.
- Don't overfill. Stop when the vehicle's filler indicates it's full or at the amount the manual gives.
- Rinse any drips off paintwork and the filler area with water. Dried AdBlue leaves white urea crystals and can mark some surfaces.
- Close the cap firmly.
Never top up with tap water or dilute AdBlue. Minerals in tap water are well above the limits the SCR system is designed for and can cause expensive damage.
Which pack size makes sense
For one or two light vehicles, a 10 L drum is usually the easiest to handle and pour, and it may cover several top-ups. A 20 L drum costs less per litre and suits households or small businesses with a few diesel utes.
Keep drums out of direct sun, somewhere cool and shaded. AdBlue kept at or below 25°C lasts about 18 months, but only about 6 months at up to 35°C, so a drum rolling around in a hot ute tray all summer won't last as long. If it smells strongly of ammonia, that is a sign it has broken down.
For fleets of utes, it is often worth keeping a 210 L drum or IBC at the depot with a proper pump and nozzle, and tracking fills by vehicle.
How Liquidia can help. Liquidia supplies 10, 15 and 20 L drums for light vehicles, plus 210 L drums and IBCs for ute and van fleets, all VDA-licensed and lab-tested. Browse packs and pumps in the online store.