2015 Hyundai Genesis Coupe recommended oil

Driving your vehicle
50 5
Use high quality ethylene gly-
col coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because
it helps prevent corrosion in the cool-
ing system, lubricates the water
pump and prevents freezing. Be sure
to replace or replenish your coolant
in accordance with the maintenance
schedule in section 7. Before winter,
have your coolant tested to assure
that its freezing point is sufficient for
the temperatures anticipated during
the winter.
Check battery and cables
Winter puts additional burdens on
the battery system. Visually inspect
the battery and cables as described
in section 7. The level of charge in
your battery can be checked by an
authorized HYUNDAI dealer or a
service station.
Change to "winter weight" oil
if necessary
In some climates it is recommended
that a lower viscosity "winter weight"
oil be used during cold weather. See
section 8 for recommendations. If
you aren't sure what weight oil you
should use, consult an authorized
HYUNDAI dealer.
Check spark plugs and igni-
tion system
Inspect your spark plugs as
described in section 7 and replace
them if necessary. Also check all
ignition wiring and components to be
sure they are not cracked, worn or
damaged in any way.
WARNING- Tire chains
The use of chains may
adversely affect vehicle han-
dling.
Do not exceed 20 mph (30
km/h) or the chain manufac-
turer’s recommended speed
limit, whichever is lower.
Drive carefully and avoid
bumps, holes, sharp turns,
and other road hazards, which
may cause the vehicle to
bounce.
Avoid sharp turns or locked-
wheel braking.
CAUTION
Chains that are the wrong size
or improperly installed can
damage your vehicle's brake
lines, suspension, body and
wheels.
Stop driving and retighten the
chains any time you hear them
hitting the vehicle.

Maintenance
8 7
NORMAL MAINTENANCE SCHEDULE
The following maintenance services must be performed to ensure good emission control and performance. Keep
receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the fre-
quency of service is determined by whichever occurs first.
*
1: Check the engine oil level and leak every 350 miles
(500 km) or before starting a long trip.
*
2: The drive belt should be replaced when cracks occur
or tension is reduced excessively.
*
3: If TOP TIER Detergent Gasoline is not available, one
bottle of additive is recommended. Additives are
available from your authorized HYUNDAI dealer
along with information on how to use them. Do not
mix other additives.
*
4: Rear differential oil should be changed anytime they
have been submerged in water.
*
5: Fuel filter & Fuel tank air filter are considered to be
maintenance free but periodic inspection is recom-
mended for this maintenance schedule depends on
fuel quality. If there are some important safety matters
like fuel flow restriction, surging, loss of power, hard
starting problem etc, replace the fuel filter immediately
regardless of maintenance schedule and consult an
authorized HYUNDAI dealer for details.*
6: When adding coolant, use only deionized 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 serious malfunction or engine
damage.
*
7: Inspect for excessive valve noise and/or engine vibra-
tion and adjust if necessary. We recommend that the
system be checked by an authorized HYUNDAI dealer.

723
Maintenance
ENGINE OIL
Checking the engine oil level
1. Be sure the vehicle is on level
ground.
2. Start the engine and allow it to
reach normal operating tempera-
ture.
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. The level should
be between F and L.
If it is near or at L, add enough oil to
bring the level to F.Do not overfill.
Use a funnel to help prevent oil
from being spilled on engine com-
ponents.
Use only the specified engine oil.
(Refer to “Recommended lubricants
and capacities” in section 8.)
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 with engine oil.
Engine damage may result.
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.
OBK079035OBK079036

Maintenance
28 7
BRAKE AND CLUTCH (IF EQUIPPED) FLUID
Checking the brake/clutch
fluid level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake/clutch fluid, clean
the area around the reservoir cap
thoroughly to prevent brake/clutch
fluid contamination.If the level is low, add fluid to the
MAX level. The level will fall with
accumulated mileage. This is a nor-
mal condition associated with the
wear of the brake linings. If the fluid
level is excessively low, have the
brake system checked by an author-
ized HYUNDAI dealer.
Use only the specified brake/clutch
fluid. (Refer to “Recommended lubri-
cants or capacities” in section 8.)
Never mix different types of fluid.
WARNING - Brake fluid
When changing and adding
brake/clutch fluid, handle it
carefully. Do not let it come in
contact with your eyes. If
brake/clutch fluid should come
in contact with your eyes, imme-
diately flush them with a large
quantity of fresh tap water. Have
your eyes examined by a doctor
as soon as possible.
WARNING - Loss of
brake fluid
In the event the brake system
requires frequent additions of
fluid, the vehicle should be
inspected by an authorized
HYUNDAI dealer.
OBK079007
CAUTION
Do not allow brake/clutch fluid
to contact the vehicle's body
paint, as paint damage will
result. Brake/clutch fluid, which
has been exposed to open air
for an extended time should
never be used as its quality can-
not be guaranteed. It should be
disposed of properly. Don't put
in the wrong kind of fluid. A few
drops of mineral-based oil, such
as engine oil, in your brake /
clutch system can damage
brake / clutch system parts.

729
Maintenance
POWER STEERING FLUID
Checking the power steering
fluid level
With the vehicle on level ground,
check the fluid level in the power
steering reservoir periodically. The
fluid should be between MAX and
MIN marks on the side of the gauge
at the normal temperature.
Before adding power steering fluid,
thoroughly clean the area around the
reservoir cap to prevent power steer-
ing fluid contamination.
If the level is low, add fluid to the
MAX level.
✽ ✽
NOTICE
Check that the fluid level is in the
"HOT" range on the gauge. If the
fluid is cold, check that it is in the
"COLD" range.
In the event the power steering sys-
tem requires frequent addition of
fluid, the vehicle should be inspected
by an authorized HYUNDAI dealer.
Use only the specified power steering
fluid. (Refer to "Recommended lubri-
cants or capacities" in section 8.)
Checking the power steering
hose
Check the connections for oil leaks,
damage and twists in the power
steering hose before driving.
CAUTION
To avoid damage to the power
steering pump, do not operate
the vehicle for prolonged peri-
ods with a low power steering
fluid level.
Never start the engine when
the reservoir tank is empty.
When adding fluid, be careful
that dirt does not get into the
tank.
Too little fluid can result in
increased steering effort
and/or noise from the power
steering system.
(Continued)
(Continued)
The use of the non-specified
fluid could reduce the effective-
ness of the power steering sys-
tem and cause damage to it.
OBK072006

Maintenance
82 7
Interior care
Interior general precautions
Prevent chemicals such as perfume,
cosmetic oil, sun cream, hand cleaner,
and air freshener from contacting the
interior parts because they may cause
damage or discoloration. If they do
contact the interior parts, wipe them off
immediately. See the instructions that
follow for the proper way to clean vinyl.
Cleaning the upholstery and inte-
rior trim
Vinyl
Remove dust and loose dirt from
vinyl with a whisk broom or vacuum
cleaner. Clean vinyl surfaces with a
vinyl cleaner.
Fabric
Remove dust and loose dirt from fab-
ric with a whisk broom or vacuum
cleaner. Clean with a mild soap solu-
tion recommended for upholstery or
carpets. Remove fresh spots immedi-
ately with a fabric spot cleaner. If
fresh spots do not receive immediate
attention, the fabric can be stained
and its color can be affected. Also, its
fire-resistant properties can be
reduced if the material is not properly
maintained.
Cleaning the lap/shoulder belt
webbing
Clean the belt webbing with any mild
soap solution recommended for
cleaning upholstery or carpet. Follow
the instructions provided with the
soap. Do not bleach or re-dye the
webbing because this may weaken it.
Cleaning the interior window
glass
If the interior glass surfaces of the
vehicle become fogged (that is, cov-
ered with an oily, greasy or waxy
film), they should be cleaned with
glass cleaner. Follow the directions
on the glass cleaner container.CAUTION
Never allow water or other liq-
uids to come in contact with
electrical/electronic compo-
nents inside the vehicle as this
may damage them.
CAUTION
Using anything but recommend-
ed cleaners and procedures
may affect the fabric’s appear-
ance and fire-resistant proper-
ties.
CAUTION
Do not scrape or scratch the
inside of the rear window. This
may result in damage to the rear
window defroster grid.CAUTION
When cleaning leather products
(steering wheel, seats etc.), use
neutral detergents or low alco-
hol content solutions. If you use
high alcohol content solutions
or acid/alkaline detergents, the
color of the leather may fade or
the surface may get stripped off.

Specifications, Consumer information, Reporting safety defects
4 8
RECOMMENDED LUBRICANTS AND CAPACITIES
These lubricants and fluids are recommended for use in your vehicle.
*1Refer to the recommended SAE viscosity numbers on the next page.
*2Engine 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.
*
3If the API service SM engine oil is not available in your country, you are able to use API service SL, ILSAC GF-4, ACEA 3.
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.
LubricantVolumeClassification
Engine oil *1*2
(drain and refill)
Recommends6.02 US qt. (5.7 l)API service SM, ILSAC GF-4, ACEA A5 or above*3
Automatic transmission fluid10.14 US qt. (9.6 l)
GS ATF SP-IV-RR, HYUNDAI genuine
ATF SP-IV-RR or other brands meeting the above specification
approved by HYUNDAI Motor Co.,
Manual transmission fluid2.3 ~ 2.4 US qt.
(2.2 ~ 2.3 l)HYUNDAI Genuine transaxle fluid (API GL-4, SAE 75W/85)
Use the Manual transaxle fluid approved by HYUNDAI motor com-
pany. Consult an authorized HYUNDAI dealer for details.
Power steering0.95 US qt. (0.9 l)Pentosin CHF 202
CoolantM/T9.51 US qt. (9 l) Mixture of antifreeze and water
(Ethylene glycol base coolant for aluminum radiator)
A/T9.30 US qt. (8.8 l)
Brake fluid0.7 ~ 0.8 US qt. (0.7 ~ 0.8 l)SAE J1703, FMVSS116 DOT-3 or DOT-4
Fuel17.17 US gal. (65 l)Unleaded gasoline
Rear differential oil1.48 US qt. (1.4 l)Hypoid gear oil API GL-5, SAE 75W/90

Recommended SAE viscosity
number Engine oil viscosity (thickness) has an
effect on fuel economy and cold
weather operating (engine start and
engine oil flowability). Lower viscosity
engine oils can provide better fuel
economy and cold weather perform-
ance, however, higher viscosity engine
oils are required for satisfactory lubri-
cation in hot weather. Using oils of any
viscosity other than those recommend-
ed could result in engine damage.When choosing an oil, consider the
range of temperature your vehicle will
be operated in before the next oil
change. Proceed to select the recom-
mended oil viscosity from the chart.
CAUTION
Always be sure to clean the area
around any filler plug, drain
plug, or dipstick before check-
ing or draining any lubricant.
This is especially important in
dusty or sandy areas and when
the vehicle is used on unpaved
roads. Cleaning the plug and
dipstick areas will prevent dirt
and grit from entering the
engine and other mechanisms
that could be damaged.
85
Specifications, Consumer information, Reporting safety defects
Temperature Range for SAE Viscosity Numbers
Temperature
Gasoline
Engine Oil *
1
°C
(°F)-30 -20 -10 0 10 20 30 40 50
-10 0 20 40 60 80 100 120
10W-30
5W-30
*1For better fuel economy, it is recommended to use the engine oil of
a viscosity grade SAE 5W-30 (API SM / ILSAC GF-4 / ACEA A5).
However, if the engine oil is not available in your country, select the
proper engine oil using the engine oil viscosity chart.