refrigerant type INFINITI Q50 2018 Owner's Manual

The following descriptions are provided to
give you a better understanding of the
scheduled maintenance items that should
be regularly checked or replaced. The main-
tenance schedule indicates at which mile-
age/time intervals each item requires
service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. Refer
to “General maintenance” (P.9-2).
Items marked with “*” are recommended by
INFINITI for reliable vehicle operation. You
are not required to perform maintenance on
these items in order to maintain the warran-
ties which come with your vehicle. Other
maintenance items and intervals are re-
quired.
When applicable, additional information can
be found in the “8. Do-it yourself” section of
this manual.
NOTE:
INFINITI does not advocate the use of non-
OEM approved aftermarket flushing sys-
tems and strongly advises against perform-
ing these services on an INFINITI product.
Many of the aftermarket flushing systems
use non-OEM approved chemicals or sol-
vents, the use of which has not been
validated by INFINITI.For recommended fuel, lubricants, fluids,
grease, and refrigerant, refer to “Capacities
and recommended fluids/lubricants” (P.10-
2) of this manual.
EMISSION CONTROL SYSTEM
MAINTENANCE
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts.
Engine air filter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant* (for VR30DDTT engine
models):
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only Genuine NISSAN Long Life Anti-
freeze/Coolant (blue) or equivalent with the
proper mixture. (Refer to “Engine cooling
system (for VR30DDTT engine models)”
(P.8-6) to determine the proper mixture for
your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.Engine coolant* (for 2.0L turbo gasoline
engine models):
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only BASF Glysantin® G48® or equiva-
lent with the proper mixture. (Refer to
“Engine cooling system (for 2.0L turbo
gasoline engine models)” (P.8-8) to deter-
mine the proper mixture for your area.)
NOTE:
Mixing any other type of coolant or the use
of non-distilled water may reduce the
recommended service interval of the cool-
ant.
Intercooler coolant (for VR30DDTT engine
models):
Intercooler coolant is maintenance-free.
Engine oil and oil filter:
Replace engine oil and oil filter at the
specified intervals. For recommended oil
grade and viscosity refer to “Capacities and
recommended fluids/lubricants” (P.10-2).
Engine valve clearance*:
Inspect only if valve noise increases. Adjust
valve clearance if necessary.
Evaporative emissions control vapor lines*:
Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Maintenance and schedules9-5
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS

Fluid typeCapacity (approximate)
Recommended Fluids/Lubricants
Metric
Measure US
Measure Imperial
Measure
Automatic Transmission Fluid (ATF)
———Â
Genuine NISSAN Matic S ATF
 INFINITI recommends using Genuine NISSAN Matic S ATF ONLY
in INFINITI automatic transmissions. Do not mix with other fluids.
Using fluids that are not equivalent to Genuine NISSAN Matic S
ATF may damage the automatic transmission. Damage caused by
the use of fluids other than as recommended is not covered under
the INFINITI’s new vehicle limited warranty.
Differential gear oil Front ———Â
Genuine NISSAN Differential Oil Hypoid Super GL-5 80W-90 or
equivalent conventional (non-synthetic) oil.
Rear ———Â
Genuine NISSAN Differential Oil Hypoid Super-S GL-5 synthetic
75W-90 or equivalent
Transfer fluid
———Â
Genuine NISSAN Matic J ATF
 INFINITI recommends using Genuine NISSAN Matic J ATF ONLY in
INFINITI transfers. Do not mix with other fluids. Using fluids that
are not equivalent to Genuine NISSAN Matic J ATF may damage
the transfer. Damage caused by the use of fluids other than as
recommended is not covered under the INFINITI’s new vehicle
limited warranty.
Brake fluid
Refill to the proper oil level according to the
instructions in the “8. Do-it-yourself” section. Â
Genuine NISSAN Super Heavy Duty Brake Fluid
*2or equivalent
DOT 3*2: Available in mainland U.S.A. through an INFINITI retailer.
Power steering fluid ÂGenuine NISSAN E-PSF or equivalent
 Use of a power steering fluid other than Genuine NISSAN E-PSF
will prevent the power steering system from operating properly.
Multi-purpose grease — — — ÂNLGI No. 2 (Lithium soap base)
Air conditioning system refrigerant ———Â
HFC-134a (R-134a)
For additional information, see “Vehicle identification” (P.10-14)
for air conditioner specification label.
Air conditioning system lubricants — — — ÂNISSAN A/C System Oil PAG or exact equivalent
Window washer fluid ———Â
Genuine NISSAN Windshield Washer Concentrate Cleaner &
Antifreeze or equivalent
Technical and consumer information10-3