2012 Lexus LFA engine

5
When trouble arises
355
5-2. Steps to take in an emergency
If your vehicle has to be stopped in an emergency
Only in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicle using the following procedure:
Steadily step on the brake pedal with both feet and firmly depress
it.
Do not pump the brake pedal repeatedly as this will increase the dis-
tance required to slow the vehicle.
Select Neutral. (  P. 103)
If Neutral is selected After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If Neutral cannot be selected Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
Stop the engine by turning the
ignition switch to the “ACC” posi-
tion.
Stop the vehicle in a safe place by the road.
STEP1
STEP2
STEP3
STEP4
STEP3
STEP4
■Stopping the engine in an emergency
The engine cannot be stopped by pressi ng the “ENGINE START” switch, as this
switch is not designed to stop the engine. If the vehicle has to be stopped in an
emergency, make sure to turn the ignition switch to the “ACC” position.
STEP5

356
5-2. Steps to take in an emergency
CAUTION
■If the engine has to be turned off while driving
●If the engine is turned off, the power assist for the brakes and steering may not
function, making braking and steering more difficult. Decelerate as much as pos-
sible before turning off the engine.
●Never attempt to remove the key, as doing so will lock the steering wheel.

359
6-1. Specifications
6
Vehicle specifications
■Engine number
The engine number is stamped on
the bottom of the engine block as
shown.

360
6-1. Specifications
Engine
Fuel
Model1LR-GUE
Ty p e10-cylinder V type, 4-cycle, gasoline
Bore and stroke3.50 3.10 in. (88.0  79.0 mm)
Displacement 293.2 cu.in. (4805 cm3)
Drive belt tensionAutomatic adjustment
Fuel typeUnleaded gasoline only
Octane rating91 (Research octane number 96) or higher
Fuel tank capacity
(Reference)19.3 gal. (73 L, 16.1 Imp. gal.)
NOTICE
■Fuel precaution
Do not use any fuel other than that specified above. Doing so may cause engine
damage.

361
6-1. Specifications
6
Vehicle specifications
Lubrication system■ Specified engine oil for the LFA
*1: The oil filters used are exclusive to the LFA. When the oil is changed, the oil fil-
ters should also be replaced.
*
2: The lifetime of the vehicle depends greatly on the quality of oil used. The use of “Mobil 1 5W-50” is most suitable for your vehicle and is recommended.
Oil capacity*1
(Amount of oil required
for an oil change 
reference) With twin air-cooled oil cooler
18.0 qt. (17.0 L, 15.0 Imp. qt.)
With single air-cooled oil cooler
16.9 qt. (16.0 L, 14.1 Imp. qt.)
Oil brand*2“Mobil 1 5W-50”
Recommended API
grade
SM or SN
■Engine oil viscosity
●The 5W portion of the oil viscosity rating
indicates the characteristic of the oil
which allows cold startability. Oils with a lower value before the W allow for eas-
ier starting of the engine in cold weather.
●The 50 in 5W-50 indicates the oil viscosit y when the oil is at its operating tem-
perature. An oil with a higher viscosity may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.
NOTICE
■To prevent engine damage
If “Mobil 1 5W-50” is not available, another oil of equivalent quality to “Mobil 1
5W-50” may be used. In this case, do not start the engine if the engine coolant or
oil temperature is below 5 F (-15C), and do not drive the vehicle under extreme
load conditions.

362
6-1. Specifications
Cooling system
Ignition system
Capacity26.9 qt. (25.5 L, 22.4 Imp. qt.)
Coolant typeUse 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 cool-
ant with long-life hybrid organic acid technology
Do not use plain water alone.
Spark plug
Make
Gap DENSO PK22HTBR-L8
0.032 in. (0.8 mm)
NOTICE
■Platinum-tipped spark plugs
Use specified spark pl
ugs mentioned above. Do not adjust gap when tuning engine.

363
6-1. Specifications
6
Vehicle specifications
Electrical system
Front counter gear
Rear transaxle
Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the fac-
tory. Use Lexus approved “Toyota Genuine Differential Gear Oil” or an equivalent
of matching quality that satisfies the above specifications. Please contact your
Lexus dealer for further details.
Clutch & Shift Hydraulic System Fluid
Battery
Open voltage* at
68 F (20 C): 12.6
12.8 V Fully charged
12.2 
12.4 V Half charged
11.8 
12.0 V Discharged
(*: Voltage checked 20 minutes after the
engine and all the lights are turned off)
Charging rates 5 A max.
Engine oil
Oil brand“Mobil 1 5W-50” (also used for the engine)
Oil capacity5.6 qt. (5.3 L, 4.7 Imp. qt.)
Oil type and viscosity“Toyota Genuine Differential Gear Oil LT
75W-85 GL-5” or equivalent
Fluid type“Toyota Genuine Brake Fluid 2500H”
(change not needed)

364
6-1. Specifications
Brakes
*1: Minimum horizontal distance between and when the pedal is depressedwith a force of 45 lbf (200 N, 20 kgf) while the engine is idling.
*2: Upper side of pedal cover
Pedal clearance*14.0 in. (102 mm) Min.
Floor (firewall)
Brake pedal
Pe d a l c o ve r
Pedal free play 0.04  0.08 in. (1.0  2.0 mm)
Brake pad wear limit0.08 in. (2.0 mm)
Parking brake pad wear limit0.06 in. (1.5 mm)
Fluid typeFMVSS No.116 DOT 3 or SAE J1703
4.0 in. (102 mm) Min. 0.20 in. (5 mm) or less*2