2020 HYUNDAI I20 engine

10-27
10
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake/clutch fluid (if equipped)
Check brake/clutch fluid level in the
brake fluid reservoir. The level should
be between “MIN” (Minimum) and
“MAX” (Maximum) marks on the side of
the reservoir. Use only hydraulic brake/
clutch fluid conforming to DOT 3 or 4
specification.
Parking brake
Inspect the parking brake system
including the parking brake lever and
cables.
Rear brake drums and linings
(if equipped)
Check the rear brake drums and linings
for scoring, burning, leaking fluid,
broken parts, and excessive wear.
Brake pads, calipers and discs
Check the pads for excessive wear, discs
for run out and wear, and calipers for
fluid leakage.
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and engine
off, check for excessive free-play in the
steering wheel.
Check the linkage for bends or damage.
Check the dust boots and ball joints
for deterioration, cracks, or damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged parts
and, if necessary, repack the grease.
Air conditioning refrigerant
(if equipped)
Check the air conditioning lines and
connections for leakage and damage.

10-28
Maintenance
ENGINE OIL
Checking the engine oil level
(Petrol Engine )
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„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
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„„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).
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„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
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„„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)
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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
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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.

10-31
10
Changing the engine oil and
filter
We recommend that the engine oil
and filter be replaced by an authorized
HYUNDAI dealer.
WARNING
Used engine oil may cause skin
irritation or cancer if left in contact
with the skin for prolonged periods
of time. Used engine oil contains
chemicals that have caused cancer in
laboratory animals. Always protect your
skin by washing your hands thoroughly
with soap and warm water as soon as
possible after handling used oil.

10-32
Maintenance
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is filled
at the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and
before traveling to a colder climate.
NOTICE
• Do not drive with no engine coolant.
It may cause water pump failure and
engine seizure, etc.
• When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small
quantities.
Checking the coolant level
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„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between F (Full) and L (Low) marked on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water.
Bring the level to F (Full), but do
not overfill. If frequent additions are
required, we recommend that the
system be inspected by an authorized
HYUNDAI dealer.
ENGINE COOLANT

10-33
10
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„„Petrol Engine (1.0 T-GDi)Petrol Engine (1.0 T-GDi)
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„„Petrol Engine (Smartstream G1.2)Petrol Engine (Smartstream G1.2)
WARNING
Removing radiator cap
• Never attempt to remove the radiator
cap while the engine is operating or
hot. Doing so might lead to cooling
system and engine damage and could
result in serious personal injury from
escaping hot coolant or steam.• Turn the engine off and wait until it
cools down. Use extreme care when
removing the radiator cap. Wrap
a thick towel around it, and turn it
counterclockwise slowly to the first
stop. Step back while the pressure
is released from the cooling system.
When you are sure all the pressure
has been released, press down on the
cap, using a thick towel, and continue
turning counterclockwise to remove
it.
• Even if the engine is not operating,
do not remove the radiator cap
or the drain plug while the engine
and radiator are hot. Hot coolant
and steam may still blow out under
pressure, causing serious injury.
WARNING
The electric motor (cooling
fan) is controlled by engine
coolant temperature,
refrigerant pressure and
vehicle speed. It may
sometimes operate even when the
engine is not running. Use extreme
caution when working near the blades
of the cooling fan so that you are not
injured by a rotating fan blades. As the
engine coolant temperature decreases,
the electric motor will automatically
shut off. This is a normal condition.

10-34
Maintenance
Recommended engine coolant
• Use only soft (distilled) water in the
coolant mixture.
• The engine in your vehicle has
aluminum engine parts and must be
protected by an ethylene-glycol-based
coolant to prevent corrosion and
freezing.
• DO NOT USE alcohol or methanol
coolant or mix them with the specified
coolant.
• Do not use a solution that contains
more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixture percentage, refer to the
following table.
Ambient
TemperatureMixture Percentage
(volume)
Antifreeze Water
-15°C (5°F)35 65
-25°C (-13°F)40 60
-35°C (-31°F) 50 50
-45°C (-49°F) 60 40

WARNING
Radiator cap
Do not remove the radiator
cap when the engine and
radiator are hot. Scalding
hot coolant and steam
may blow out under pressure causing
serious injury.
Changing the coolant
We recommend that the coolant be
replaced by an authorized HYUNDAI
dealer.
NOTICE
Put a thick cloth or fabric around the
radiator cap before refilling the coolant
in order to prevent the coolant from
overflowing into engine parts such as
the alternator.
WARNING
Coolant
• Do not use radiator coolant or
antifreeze in the washer fluid
reservoir.
• Radiator coolant can severely
obscure visibility when sprayed on
the windshield and may cause loss
of vehicle control or damage to paint
and body trim.