2021 HYUNDAI I20 check oil

Engine compartment .................................................................................... 10-4
Maintenance services
................................................................................... 10-6
Owner’s responsibility ............................................................................................ 10-6
Owner maintenance precautions........................................................................... 10-6
Owner maintenance ..................................................................................... 10-8
Owner maintenance schedule ............................................................................... 10-8
Scheduled maintenance service ................................................................ 10-10
Normal maintenance schedule - petrol engine .................................................... 10-11
Maintenance under severe usage conditions - petrol engine
............................ 10-15
Normal maintenance schedule - diesel engine ....................................................10-17
Maintenance under severe usage conditions - diesel engine ............................10-20
Explanation of scheduled maintenance items ..........................................10-24
Engine oil
..................................................................................................... 10-26
Checking the engine oil level (Petrol Engine) .......................................................10-28
Checking the engine oil level (Diesel Engine) ......................................................10-29
Changing the engine oil and filter
......................................................................... 10-31
Engine coolant .............................................................................................10-32
Checking the coolant level .................................................................................... 10-32
Recommended engine coolant .............................................................................10-34
Changing the coolant
............................................................................................10-34
Brake/clutch fluid ........................................................................................10-35
Checking the brake/clutch fluid level ................................................................... 10-35
Intelligent Manual Transmission (iMT) System actuator fluid .................. 10-37
Checking the iMT system actuator fluid level ...................................................... 10-37
Washer fluid ................................................................................................ 10-38
Checking the washer fluid level ............................................................................10-38
Parking brake .............................................................................................. 10-39
Checking the parking brake ..................................................................................10-39
Fuel filter (for diesel) ................................................................................... 10-40
Draining water from fuel filter .............................................................................. 10-40
Fuel filter cartridge replacement
......................................................................... 10-40
Air cleaner .................................................................................................... 10-41
Filter replacement .................................................................................................. 10-41
Climate control air filter.............................................................................. 10-43
Filter inspection ..................................................................................................... 10-43
Filter replacement ................................................................................................. 10-43
10. Maintenance
10

10-7
10
WARNING
Do not leave gloves, rags or any other
combustible material in the engine
compartment. Doing so may cause a
heat-induced fire.
NOTICE
• Do not put heavy objects or apply
excessive force on top of the engine
cover (if equipped) or fuel related
parts.
• When you inspect the fuel system
(fuel lines and fuel injection devices),
we recommend that you contact an
authorized HYUNDAI dealer.
• Do not drive long time with the
engine cover (if equipped) removed.
• When checking the engine room, do
not go near fire. Fuel, washer fluid,
etc. are flammable oils that may
cause fire.
• Before touching the battery, ignition
cables and electrical wiring, you
should disconnect the battery “-”
terminal. You may get an electric
shock from the electric current.
• When you remove the interior trim
cover with a flat head (-) driver, be
careful not to damage the cover.
• Be careful when you replace and
clean bulbs to avoid burns or
electrical shock.

10-8
Maintenance
The following lists are vehicle checks
and inspections that should be
performed at the frequencies indicated
to help ensure safe, dependable
operation of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer
as soon as possible.
These Owner Maintenance Checks are
generally not covered by warranties and
you may be charged for labor, parts and
lubricants used.
WARNING
Diesel Engine
Never manipulate or modify the
injection system while running the
diesel engine or within 30 seconds
after turning OFF the diesel engine. The
high-pressure pump, high-pressure
pipes, rail, and injectors are still subject
to high pressure immediately after
stopping the diesel engine.
When the fuel leakage vents out, it
may cause serious body injury. Any
people, who are implanted with the
artificial cardiac pacemaker, should
remain away from the ECU or the
wiring harness by at least 30 cm,
while running the diesel engine. The
high currents of the electronic engine
control system produce a considerable
amount of magnetic fields.
Owner maintenance schedule
When you stop for fuel:
• Check the engine oil level.
• Check the coolant level in coolant
reservoir.
• Check the windshield washer fluid
level.
• Look for low or under-inflated tires.
• Check the radiator and condenser.
Check if the front of the radiator and
condenser are clean and not blocked
with leaves, dirt or insects etc.
If any of the above parts are extremely
dirty or you are not sure of their
condition, we recommend that you
contact an authorized HYUNDAI
dealer.
WARNING
Be careful when checking your engine
coolant level when the engine is hot.
Scalding hot coolant and steam may
blow out under pressure. This could
cause burns or other serious injury.
OWNER MAINTENANCE

10-18
Maintenance
MAINTENANCE
INTERVALS
MAINTENANCE ITEMNumber of months or driving distance, whichever comes first
Kmsx1,000
1.51020304050607080
Months
2 1224364860728496
Years
- 12345678
ENGINE BAY
Engine oil & filter *
1 *2 *3
I RRRRRRRR
Drive beltAt first, inspect every 80,000km (50,000miles) or 48months :
after that, inspect every 20,000km (12,500miles) or 12months
Air cleaner filter - C R C R C R C
Battery condition & specific gravityIIIIIIIII
Valve clearance*
4
Inspect at every 90,000 kms or 108 months
Hoses (Vaccum/ EGR / VGT/ WGT) -IIIIIIII
Idler / damper pulley/Adj. Bolt Inspect when replacing the drive belt or timing belt/chain
Brake/Clutch fluid Inspect @ Every service ; Replace @ every 45,000 km or 3 years
Engine Coolant (topup & specify gravity) *
5
Inspect at every service;
Replace first at 120,000 Km or 120 months ; then at every 30,000 Km or 24 months
Manual transaxle fluid *
6
------ I - I
Dual Transmission fluid (if equipped) *
6
No Check ; No Service reqd.
NORMAL MAINTENANCE SCHEDULE - DIESEL ENGINE
C : Clean and Replace if necessary I : Inspect and if necessary adjust,top-up, clean or replace
R : Replace

10-24
Maintenance
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the car
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
NOTICE
When you are inspecting the belt, place
the ignition switch in the LOCK/OFF or
ACC position.
Fuel filter
A clogged filter can limit the speed
at which the vehicle may be driven,
damage the emission system and cause
multiple issues such as hard starting.
If an excessive amount of foreign
matter accumulates in the fuel tank, the
filter may require replacement more
frequently.
After installing a new filter, run the
engine for several minutes, and check
for leaks at the connections.
We recommend that the fuel filter be
replaced by an authoized HYUNDAI
dealer.
Fuel lines, fuel hoses and
connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
We recommend that the fuel lines, fuel
hoses and connections be replaced by
an authoized HYUNDAI dealer.
WARNING
Diesel Engine
Never manipulate or modify the
injection system while running the
diesel engine or within 30 seconds
after turning OFF the diesel engine. The
high-pressure pump, high-pressure
pipes, rail, and injectors are still subject
to high pressure immediately after
stopping the diesel engine.
When the fuel leakage vents out, it
may cause serious body injury. Any
people, who are implanted with the
artificial cardiac pacemaker, should
remain away from the ECU or the
wiring harness by at least 30 cm,
while running the diesel engine. The
high currents of the electronic engine
control system produce a considerable
amount of magnetic fields.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
that a new vapor hose or fuel filler cap is
correctly replaced.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

10-28
Maintenance
ENGINE OIL
Checking the engine oil level
(Petrol Engine )
OBI3090003OBI3090003
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
OBC3090009OBC3090009
„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)
1. Be sure the vehicle is on level ground.
2. Start the engine and allow it to reach
normal operating temperature.
3. Turn the engine off and wait for a few
minutes (about 15 minutes) for the oil
to return to the oil pan.
4. Pull the dipstick out, wipe it clean, and
reinsert it fully.
5. Pull the dipstick out again and check
the level. The level should be between
F (Full) and L (Low).
OBI3090004OBI3090004
„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
OBC3090013OBC3090013
„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)
If it is near or at L (Low), add enough
oil to bring the level to F (Full). Do not
overfill.
Use a funnel to help prevent oil from
being spilled on engine components.
Use only the specified engine oil. (Refer
to “Recommended lubricants and
capacities” in chapter 2.)

10-29
10
WARNING
Radiator hose
Be very careful not to touch the
radiator hose when checking or adding
the engine oil as it may be hot enough
to burn you.
CAUTION
• Do not overfill the engine oil. It may
damage the engine.
• Do not spill engine oil, when adding
or changing engine oil. If you drop
the engine oil on the engine room,
wipe it off immediately.
• When you wipe the oil level gauge,
you should wipe it with a clean cloth.
When mixed with debris, it can cause
engine damage.
• Oil consumption may increase while
you break in a new vehicle and it will
be stabilized after driving 6,000 km.
• The engine oil consumption can be
affected by driving habits, climate
conditions, traffic conditions,
oil quality, etc. Therefore, it is
recommended that you inspect the
engine oil level regularly and refill it if
necessary.
• The engine oil change interval is
set for the purpose of preventing
oil deterioration, and is not related
the amount of oil consumption; so,
check and refill the amount of the oil
regularly.
Checking the engine oil level
(Diesel Engine)
OBI3090006OBI3090006
FigureRequired action
Range (A)Recommend to contact
an authorized HYUNDAI
dealer.
Range (B)Do not refill engine oil.
Range (C)You may add engine oil
as long as the oil level
does not go above the C
range.
Range (D)You must add oil and
make sure that the oil
level is in the C Range.
1. Be sure the vehicle is on level ground.
2. Start the engine and allow it to reach
normal operating temperature.
3. Turn the engine off and wait for a few
minutes (about 5 minutes) for the oil
to return to the oil pan.
4. Pull the dipstick out, wipe it clean, and
re-insert it fully.
5. Pull the dipstick out again and check
the level.
6. The level should be in the C range. If
the level is in the D range, add enough
engine oil to bring the level up to the
C range.

10-30
Maintenance
OBI3090007OBI3090007
If it is near or at L, add enough oil to
bring the level to F. Do not overfill.
Use only the specified engine oil.
• If exceeding the maintenance
schedule for replacement of engine
oil, the engine oil performance
may deteriorate and the engine
condition may be affected. Therefore,
the replacement cycle should be
observed.
• If not using the recommended oil,
replace it according to the severe
usage maintenance conditions.
(Refer to “Recommended lubricants
and capacities” in chapter 2.)
WARNING
Radiator hose
Be very careful not to touch the
radiator hose when checking or adding
engine oil as it may be hot enough to
burn you.
CAUTION
• Do not spill engine oil, when adding
or changing engine oil. If you drop
the engine oil on the engine room,
wipe it off immediately.
• When you wipe the oil level gauge,
you should wipe it with a clean cloth.
When mixed with debris, it can cause
engine damage.