2019 Lexus IS350 fuel

5899-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
Engine
IS350 AWD/IS350/IS300 AWDIS300
Model3.5 L 6-cylinder (2GR-FKS)
engine2.0 L 4-cylinder (8AR-FTS)
engine
Type 6-cylinder V type,
4-cycle, gasoline 4-cylinder in line,
4-cycle, gasoline
(with turbocharger)
Bore and stroke
3.70 
3.27 in.
(94.0  83.0 mm) 3.39
 3.39 in.
(86.0  86.0 mm)
Displacement 210.9 cu. in. (3456 cm3) 121.9 cu. in. (1998 cm3)
Valve clearance
(engine cold)Automatic adjustment
Drive belt tensionAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity
(Reference)17.5 gal. (66.3 L, 14.6 Imp. gal.)

5909-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
■Oil capacity (Drain and refill [Reference*])
*: The engine oil capacity is a reference quantity to be used when changing the engine oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20
at the next oil change.
Lubrication system
IS350 (2WD)IS350 AWD/IS300 AWD (AWD)IS300
With filter6.0 qt.
(5.7 L, 5.0 Imp. qt.)6.8 qt.
(6.4 L, 5.6 Imp. qt.)4.9 qt.
(4.6 L, 4.0 Imp. qt.)
Without filter5.8 qt.
(5.5 L, 4.8 Imp. qt.)6.3 qt.
(6.0 L, 5.3 Imp. qt.)4.5 qt.
(4.3 L, 3.8 Imp. qt.)
Outside temperature

5989-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
■Gasoline quality
In very few cases, driveabilit y problems may be caused by th e brand of gasoline you are
using. If driveability problems persist, try ch anging the brand of gasoline. If this does not
correct the problem, consult your Lexus dealer.
■Recommendation of the use of gasoline containing detergent additives
●Lexus recommends the use of gasoline that contains detergent additives to avoid the
build-up of engine deposits.
●All gasoline sold in the U.S.A. contains minimum detergent additives to clean and/or
keep clean intake systems, per EPA’s lowest additives concentration program.
●Lexus strongly recommends the use of Top Tier Detergent Gasoline. For more informa-
tion on Top Tier Detergent Gasoline and a lis t of marketers, please go to the official
website www.toptiergas.com.
■Recommendation of the use of low emission gasoline
Gasolines containing oxygenates such as et hers and ethanol, as well as reformulated
gasolines, are available in some cities. Thes e fuels are typically acceptable for use, pro-
viding they meet other fuel requirements.
Lexus recommends these fuels, since the form ulations allow for reduced vehicle emis-
sions.
Fuel information
You must only use unleaded gasoline.
Select premium unleaded gasoline with an octane rating of 91 (Research
Octane Number 96) or higher requir ed for optimum engine performance
and fuel economy.
If the octane rating is less than 91, damage to the engine may occur and may
void the vehicle warranty.
At minimum, the gasoline you use should meet the specifications of ASTM
D4814 in the U.S.A..

5999-1. Specifications
9
Vehicle specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane rating no lower than 91.
●Lexus does not recommend the use of gasoline containing methanol.
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT (Methylcyclopenta-
dienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline that contains MMT. If fuel containing
MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instru ment cluster may come on. If this happens,
contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or driv-
ing uphill. This is normal and there is no need for concern.
●Use only gasoline containing up to 15% etha-
nol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol, includ-
ing from any pump labeled E30, E50, E85
(which are only some examples of fuel con-
taining more than 15% ethanol).DO NOT use gasoline con-
taining more than 15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

6009-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
NOTICE
■Notice on fuel quality
●Do not use improper fuels. If improper fuels are used, the engine will be damaged.
●Do not use leaded gasoline.
Leaded gasoline can cause damage to your vehicle’s three-way catalytic converters
causing the emission control system to malfunction.
●Do not use gasohol other than the type previously stated.
Other gasohol may cause fuel system damage or vehicle performance problems.
●Using unleaded gasoline with an octane numb er or rating lower than the level previ-
ously stated may cause pe rsistent heavy knocking.
At worst, this may lead to engine da mage and will void the vehicle warranty.
■Fuel-related poor driveability
If poor driveability (poor hot starting, vaporization, engine knocking, etc.) is encoun-
tered after using a different type of fuel, discontinue the use of that type of fuel.
■When refueling with gasohol
Take care not to spill gasohol. It can damage your vehicle’s paint.

6089-1. Specifications
IS350 AWD/IS350/IS300 AWD/IS300_U
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has no t been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1* that follows
Occupant distributionDistribution of occupants in a vehicle as specified in the
third column of Table 1
* below
Production options weight
The combined weight of in stalled regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA metal support for a tire or a tire and tube assembly
upon which the tire beads are seated

641Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Alarm ............................................................ 78
Anchor brackets ...................................... 57
Antennas (smart access system with push-button start) ..................... 135
Anti-lock Brake System (ABS)........ 301 Warning light ...................................... 525
Approach warning (dynamic radar cruise control) ........................ 255
Armrest .................................................... 439
ASC (Active Sound Control) .......... 201
Assist grip ..................................................441
Audio input................................................321
Audio system............................................312 Audio input..............................................321
AUX port/USB port..........................321
Bluetooth
® audio...............................370
CD player ..............................................344
iPod ............................................................ 351
MP3/WMA/AAC disc .................344
Optimal use ........................................... 331
Portable music player ..................... 359
Radio ....................................................... 338
Steering wheel audio switch ......... 318
USB memory ...................................... 355 Automatic headlight leveling
system .................................................... 204
Automatic High Beam ....................... 206
Automatic light control system .................................................... 202
Automatic transmission........................ 191 If the shift lever cannot be shifted from P ..............196
M mode ....................................................194
Paddle shift switches..........................193
AUX port .................................................. 321
Average fuel economy................................. 112, 113, 115
Average vehicle speed..........................112

643Alphabetical index
IS350 AWD/IS350/IS300 AWD/IS300_U
Child safety ................................................ 52Airbag precautions ..............................38
Battery precautions ............. 483, 578
Child restraint system ......................... 53
How your child should wear the seat belt .......................................... 32
Installing child restraints..................... 57
Moon roof precautions.................... 169
Power window lock switch ............ 162
Power window precautions .......... 165
Rear door child-p rotectors ............ 127
Removed electronic key battery precautions.............. 503
Seat belt extender precautions ........................................... 35
Seat belt precautions ..........................56
Seat heater precautions..................426
Trunk precautions............................... 133
Child-protectors..................................... 127 Cleaning .......................................454, 458
Aluminum wheels ..............................455
Exterior ................................................... 454
Interior .....................................................458
Seat belts................................................ 459
Clock..........................................................437
Coat hooks ............................................... 441
Compass ..................................................449
Condenser.............................................. 480
Console box ............................................432
Cooling system ......................................478 Engine overheating .......................... 579
Cruise control Dynamic radar cruise control ..... 248
Cup holders............................................ 433
Current fuel consumption .................................. 112, 113
Curtain shield airbags ............................36
Customizable features ........................ 613