2018 LEXUS RC350 Imp. qt.

4026-3. Do-it-yourself maintenance
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■Adding engine oil
If the oil level is below or near the lo w level mark, add engine oil of the same
type as that already in the engine.
Make sure to check the oil type and prepare the items needed before adding
oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
RC350/RC300 AWDRC300
RC F
Engine oil selection P. 541, 543
Oil quantity (Low  Full) 1.6 qt. (1.5 L, 1.3 Imp. qt.)
Items Clean funnel
1
2
3

5408-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
■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.
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.)
Lubrication system
With filterWithout filter
RC3506.0 qt. (5.7 L, 5.0 Imp. qt.)5.8 qt. (5.5 L, 4.8 Imp. qt.)
RC350 AWD/
RC300 AWD6.8 qt. (6.4 L, 5.6 Imp. qt.)6.3 qt. (6.0 L, 5.3 Imp. qt.)
RC3004.9 qt. (4.6 L, 4.0 Imp. qt.)4.5 qt. (4.3 L, 3.8 Imp. qt.)
RC F9.3 qt. (8.8 L, 7.7 Imp. qt.)8.3 qt. (7.9 L, 7.0 Imp. qt.)

5448-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
■Spark plug
Cooling system
Capacity*
RC350/
RC300
AWD
10.0 qt. (9.5 L, 8.4 Imp. qt.)
RC300
Gasoline engine
8.5 qt. (8.0 L, 7.0 Imp. qt.)
Intercooler
3.3 qt. (3.1 L, 2.7 Imp. qt.)
RC F12.2 qt. (11.5 L, 10.1 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-sili-
cate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system
RC350/RC300
AWDRC300RC F
MakeDENSO
FK20HBR8NGK
DILFR7K9GDENSO
FK20HBR-J8
Gap0.031 in. (0.8 mm)0.035 in. (0.9 mm)0.031 in. (0.8 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

5458-1. Specifications
8
Vehicle specifications
RC350_RC300 AWD_RC300_RC F_U(OM24748U)
*: The fluid capacity is a reference quantity.
If replacement is necessary, contact your Lexus dealer.
Electrical system
Battery
Open voltage at 68 F
(20 C):12.3 V or higher
If the voltage is lower than the standard value, charge
the battery.
(Voltage is checked 20 minutes after the engine and all
lights are turned off.)
Charging rates5 A max.
Automatic transmission
Fluid capacity*
RC35010.0 qt. (9.5 L, 8.4 Imp. qt.)
RC350AWD/RC300
AWD10.6 qt. (10.0 L, 8.8 Imp. qt.)
RC3009.2 qt. (8.7 L, 7.7 Imp. qt.)
RC F11.8 qt. (11.2 L, 9.9 Imp. qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Front differential (AWD models)
Oil capacity 0.74 qt. (0.70 L, 0.61 Imp. qt.)
Oil type and viscosityHypoid gear oil API GL-5
Above 0F (-18 C): SAE90
Below 0 F (-18 C): SAE80W or SAE80W-90

5468-1. Specifications
RC350_RC300 AWD_RC3 00_RC F_U(OM24748U)
RC350/RC300 (vehicles without LS D [Limited Slip Differential])
RC350/RC300/RC F (vehicles with LSD [Limited Slip Differential])
RC F (vehicles with TVD [Torque Vectoring Differential])
*1: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genuine Differen tial Gear Oil” or an equivalent oil of
matching quality to satisfy the above specification. Please contact your Lexus dealer
for further details.
*2: Torque transfer modules are located on the ri ght and left sides of the rear differential
unit.
*3: Using torque transfer module fluid other than “Toyota Genuine ATF WS” may cause deterioration of performance, vibration, or ultimately damage the TVD system of your
vehicle.
Rear differential
Oil capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosityToyota Genuine Differential Gear Oil LT
75W-85 GL-5 or equivalent
*1
Oil capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Oil type and viscosityToyota Genuine Differential Gear Oil LX
75W-85 GL-5 or equivalent
*1
DifferentialTorque transfer module*2
Oil capacity1.42 qt. (1.35 L, 1.19 Imp. qt.)
Left-hand side:
0.74 qt. (0.70 L, 0.62 Imp. qt.)
Right-hand side:
0.74 qt. (0.70 L, 0.62 Imp. qt.)
Oil type and viscos-
ity
Toyota Genuine Differential
Gear Oil LT
75W-85 GL-5 or equiva-
lent
*1
Toyota Genuine ATF WS*3