2018 GENESIS G90 radiator

7-4
Maintenance
1. Engine coolant reservoir
2. Radiator cap
3. Brake fluid reservoir
4. Air cleaner
5. Engine oil dipstick 6. Engine oil filler cap
7. Windshield washer fluid reservoir
8. Fuse box
9. Jumper terminal
OHI076003N
The actual engine compartment in the vehicle may differ from the illustration.
■
■Gasoline Engine (Tau 5.0 GDI)

7-8
Maintenance
At least twice a year:(i.e., every Spring and Fall)
Check radiator, heater and air con-
ditioning hoses for leaks or dam-
age.
Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate automatic transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level. Follow Normal Maintenance Schedule
if the vehicle is usually operated where
none of the following conditions apply.
If any of the following conditions apply,
you must follow the Maintenance
Under Severe Usage Conditions.
Repeated driving short distance of
less than 5 miles (8 km) in normal
temperature or less than 10miles
(16 km) in freezing temperature
Extensive engine idling or low speed driving for long distances
Driving on rough, dusty, muddy, unpaved, graveled or salt-spread
roads
Driving in areas using salt or other corrosive materials or in very cold
weather
Driving in heavy dust condition
Driving in heavy traffic area
Driving on uphill, downhill, or mountain road repeatedly
Towing a trailer or using a camper, or roof rack
Driving as a patrol car, taxi, other commercial use of vehicle towing
Frequently driving in stop-and-go condition
For additional information or assis-
tance see an authorized retailer ofGenesis Branded products.
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7-20
Maintenance
Valve Clearance
(Lambda engine)
Inspect for excessive valve noise
and/or engine vibration and adjust if
necessary. Have an authorized retail-
er of Genesis Branded products per-
form the operation.
Cooling System
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Automatic Transmission Fluid
Automatic transmission fluid should
not be checked under normal usage
conditions. But in severe conditions,
the fluid should be changed at an
authorized retailer of Genesis
Branded products in accordance to
the scheduled maintenance at the
beginning of this chapter.
Information
Automatic transmission fluid color is
basically red.
As the vehicle is driven, the automatic
transmission fluid will begin to look
darker. This is a normal condition and
you should not judge the need to
replace the fluid based upon the
changed color.
The use of a non-specified fluid
could result in transmission mal-
function and failure.
Use only the specified automatic
transmission fluid (refer to
"Recommended Lubricants and
Capacities" in chapter 8).
NOTICE
i

7-25
07
Recommended engine coolant
When adding coolant, use onlydeionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
An improper coolant mixture can result in severe malfunction or
engine damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an ethylene-glycol
with phosphate based coolant to
prevent corrosion and freezing.
Do not use alcohol or methanol coolant or mix them with the spec-
ified 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 mixing percentage, refer to the
following table:
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of
-31°F and higher.
i
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
OHI076013
■ Lambda 3.3 T-GDI
OHI076015
■ Tau 5.0 GDI
Never remove the
radiator cap or the
drain plug while the
engine and radiator
are hot. Hot coolant
and steam may blow out under
pressure, causing serious injury.
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing 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.
(Continued)
WARNING

7-26
Maintenance
The electric motor for the cooling fan
is controlled by engine coolant tem-
perature, refrigerant pressure and
vehicle speed. As the engine coolant
temperature decreases, the electric
motor will automatically shut off. This
is a normal condition. If your vehicle
is equipped with GDI, the electric
motor for the cooling fan may begin
to operate at any time and continue
to operate until you disconnect the
negative battery cable.
Changing Engine Coolant
Have coolant changed by an author-
ized retailer of Genesis Branded
products according to the
Maintenance Schedule at the begin-
ning of this chapter.
To prevent damage to engine
parts, put a thick towel around the
radiator cap before refilling the
coolant to prevent the coolant
from overflowing into engine
parts, such as the generator.
NOTICE
The electric motor for
the cooling fan may
continue to operate
or start up when the
engine is not running
and can cause seri-
ous injury. Keep
hands, clothing and tools away
from the rotating fan blades of
the cooling fan.
WARNINGDo not use engine coolant or
antifreeze in the washer fluid
reservoir.
Engine coolant can severely
obscure visibility when sprayed
on the windshield and may
cause loss of vehicle control
resulting in an accident.
Engine coolant may also cause
damage to paint and body trim.
WARNING
(Continued)
When you are sure all the pres-
sure has been released, press
down on the cap, using a thick
towel, and continue turning
counterclockwise to remove it.

To help achieve proper engine and powertrain performance and durability, use
only lubricants of the proper quality. The correct lubricants also help promote
engine efficiency that results in improved fuel economy.
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8-6
Specifications & Consumer information
Lubricant VolumeClassification
Engine oil *
1*2
(drain and refill) 3.3 T-GDI7.29 US qt. (6.9
l)ACEA A5/B5
API SN & ILSAC GF-5
5.0
GDI2WD8.45 US qt. (8.0
l)API SM & ILSAC GF-4*3
(or above)AWD9.72 US qt. (9.2
l)
Automatic
transmission fluid 9.72 US qt. (9.2
l)GS ATF SP-IV-RR, Genesis/
Hyundai ATF SP-IV-RR or
other brands meeting the
above specification
approved by Genesis Motors
USA
Engine coolant 3.3 T-GDI
10.36 US qt. (9.8
l)
Mixture of antifreeze and
water (phosphate based eth-
ylene glycol coolant for alu-
minum radiator)
5.0
GDI2WD12.68 US qt. (12.0 l)
AWD12.05 US qt. (11.4l)
Brake fluid 0.74~0.85 US qt.
(0.7~0.8 l)FMVSS116 DOT-3 or DOT-4
Front differential oil (AWD) *
40.74 US qt. (0.7 l)Hypoid gear oil MS517-
15GT 75W/85 (GL-5)
(SK HK SYN GEAR OIL
75W/85 equivalent)
Rear differential oil *
41.48 US qt. (1.4
l)
Transfer case oil (AWD)0.66 US qt. (0.62 l)SHELL TF0870B
Fuel21.9 US gal. (83 l)Refer to “Fuel Requirements”
in the Introduction chapter.
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel economy by reducing the amount of fuel
necessary to overcome engine friction. Often, these improvements are difficult to
measure in everyday driving, but in a year’s time, they can offer significant cost and
energy savings.
*
3: If the API SM & ILSAC GF-4 engine oil is not available in your country, you are able to use API SL & ILSAC GF-3
*
4: If the front/rear differential is submerged, we recommend that you visit an author- ized retailer of Genesis Branded products to replace differential oil.