Hyundai Staria US4 2021 Owner's Manual page 762

Maintenance
Adding urea solution
Refilling urea with a refill hose
1. Turn the vehicle off.
2. To open the urea solution tank cap,
turn it counterclockwise.
3. Fully insert the refill hose and add
urea.
Do not overfill.
4. To close the urea solution tank cap,
turn it clockwise.
Refilling urea from a refill bottle
1. Turn the vehicle off.
2. To open the urea solution tank cap,
turn it counterclockwise.
3. Add urea. Do not overfill.
4. To close the urea solution tank cap,
turn it clockwise.
Use only specified urea solution (Refer
to "Recommended Lubricants and
Capacities" section in chapter 2).
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NOTICE
To prevent damage to your vehicle:
• Use only specified urea solution.
Never add any other urea solution
than what has been specified.
• Be careful not to add urea solution
into the fuel tank.
• While adding urea, be careful not to
allow foreign substances to enter
into the urea solution tank.
• Do not mix water or additives with
the urea solution.
OUS4091061 OUS4091061
• Do not over fill the urea solution
tank. In cold weather, the tank will
expand if the urea freezes.
Storing urea solution
• Store urea solution only in containers
made with the following materials.
- DIN EN 10 088-1-/-2-/-3-specified
CR-Ni steel
- Mo-Cr-Ni steel
- Polypropylene
- Polyethylene
• Do not store urea solution in
containers made with the following
materials.
- Aluminum, copper, copper alloy,
non-alloyed still, and galvanized
steel
Urea solution dissolves the metal
materials, severely damaging the exhaust
purification system.
Information
Urea solution is a water-soluble substance,
which is inflammable, non-toxic, colorless
and odorless.