12-1
ENGINE
LUBRICATION
CONTENTS
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 2
LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . 3
12109000129
Engine Oil Replacement . . . . . . . . . . . . . . . . . . . . . . 3
Oil Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . 4
Oil Level Warning System Check . . . . . . . . . . . . . . 5
ENGINE OIL COOLER
ON-VEHICLE SERVICE . . . . . . . . . . . . . . . . . . . . . 3
<6A1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Engine Oil Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
<4D6> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
12-2
ENGINE LUBRICATION - General Information
GENERAL INFORMATION
The lubrication method is a fully force-fed, full-flow
filtration type. The oil pump for 6A1 engines is a
trochoid type which is directly mounted to the
crankshaft, and the one for 4G6 and 4D6 engines
is a gear type which is driven by the crankshaft
12100010114
via the timing belt.
Furthermore, the oil level sensor is located in the
oil pan, and a system is equipped whereby an
indicator gives a warning when the oil level drops.
ENGINE OILS
Health Warning
Prolonged and repeated contact with mineral oil
will result in the removal of natural fats from the
skin, leading to dryness, irritation and dermatitis.
In addition, used engine oil contains potentially
harmful contaminants which may cause skin cancer.
Adequate means of skin protection and washing
facilities must be provided.
Recommended Precautions
The most effective precaution is to adapt working
practices which prevent, as far as practicable, the
risk of skin contact with mineral oils, for example
by using enclosed systems for handling used engine
oil and by degreasing components, where
practicable, before handling them.
Other precautions:
D Avoid prolonged and repeated contact with oils,
particularly used engine oils.
D Wear protective clothing, including impervious
gloves where practicable.
D Avoid contaminating clothes, particularly
underpants, with oil.
D Do not put oily rags in pockets, the use of
overalls without pockets will avoid this.
D Do not wear heavily soiled clothing and
oil-impregnated foot-wear. Overalls must be
cleaned regularly and kept separate from
personal clothing.
D
D
D
D
D
Where there is a risk of eye contact, eye
protection should be worn, for example,
chemical goggles or face shields; in addition
an eye wash facility should be provided.
Obtain First Aid treatment immediately for open
cuts and wounds.
Wash regularly with soap and water to ensure
all oil is removed, especially before meals (skin
cleansers and nail brushes will help). After
cleaning, the application of preparations
containing lanolin to replace the natural skin
oils is advised.
Do not use petrol, kerosine, diesel fuel, gas
oil, thinners or solvents for cleaning skin.
Use barrier creams, applying them before each
work period, to help the removal of oil from
the skin after work.
If skin disorders develop, obtain medical advice
without delay.
ENGINE LUBRICATION - Lubricants/Special Tools/On-vehicle Service
LUBRICANTS
12-3
12100040151
Items
4G6
6A1
4D6
Engine oil (API classification)
SG or higher
SG or higher
CD or higher
Engine oil quantity L
Oil filter
0.3
0.3
0.8
Oil cooler
0.1
0.3
Total
4.3
4.3
5.1
SPECIAL TOOLS
Tool
12100060119
Number
Name
Use
MB991396
Oil filter wrench
Removal and installation of engine oil filter
(When using the oil filter of MD135737)
<4G6>
MB991610
Oil filter wrench
Removal and installation of engine oil filter
(When using the oil filter of MD136466)
<6A1>
ON-VEHICLE SERVICE
12100090095
ENGINE OIL CHECK
1. Pull out the level gauge slowly and check that the oil
level is in the illustrated range.
2. Check that the oil is not excessively dirty, that there is
no coolant or gasoline mixed in, and that it has sufficient
viscosity.
ENGINE OIL REPLACEMENT
12100100163
1. Start the engine and allow it to warm up until the
temperature of the coolant reaches 80_C to 90_C.
2. Remove the engine oil filler cap.
3. Remove the drain plug to drain oil.
Caution
Use care as oil could be hot.
Drain plug
39 Nm
Drain plug gasket
4. Install a new drain plug gasket so that it faces in the
direction shown in the illustration, and then tighten the
drain plug to the specified torque.
Oil
pan
side
NOTE
Install the drain plug gasket so it faces in the direction
shown in the illustration.
12-4
ENGINE LUBRICATION - On-vehicle Service
5. Refill with specified quantity of oil.
<Petrol-powered vehicles>
Specified Engine Oil (API classification):
<4G6, 6A1> SG or higher
<4D6> CD or higher
Barometric temperature
Total quantity (Includes volume inside oil filter and
oil cooler):
<4G6, 6A1> 4.3 L
<4D6> 5.1 L
6. Install the engine oil filler cap.
7. Check oil level.
<Diesel-powered vehicles>
Barometric temperature
OIL FILTER REPLACEMENT
MB991396,
MB991610
or commercially-available tool
12100110159
1. Start the engine and allow it to warm up until the
temperature of the coolant reaches 80_C to 90_C.
2. Remove the engine oil filler cap.
3. Remove the drain plug to drain oil.
Caution
Use care as oil could be hot.
4. Use the respective tool in the following table to remove
the engine oil filter.
Caution
For vehicles with 6A1 engine, the oil which is still
inside the oil filter may overflow from the oil guide
groove and get onto the starter motor. To prevent
this, the oil inside the filter should be gradually
removed while removing the oil filter.
5. Clean the filter bracket side mounting surface.
O-ring
6. Apply a small amount of engine oil to the O-ring of the
new oil filter.
7. Once the O-ring of the oil filter is touching the flange,
use the respective tool in the following table to tighten
to the specified torque.
8. Install the drain plug and refill engine oil. (Refer to Engine
Oil Replacement on P.12-3.)
9. Race the engine 2 - 3 times, and check to be sure that
no engine oil leaks from installation section of the oil
filter.
12-5
ENGINE LUBRICATION - On-vehicle Service
Number
Engine
Tool
Tightening torque
MD135737
4G6
MB991396 or equivalent tool
Approx. 1 turn (14 Nm)
MD136466
6A1
MB991610 or equivalent tool
Approx. 3/4 turn (17 Nm)
MD336080
4D6
Commercially-available tool
Approx. 1-1/8 turns (20 Nm)
Engine oil level relay
OIL LEVEL WARNING SYSTEM CHECK
12100200047
1. Check that the proper amount of oil has been filled.
2. When the ignition switch is turned to ON (do not start
the engine), check that the oil level warning lamp
illuminates.
NOTE
If the oil level warning lamp does not illuminate, the cause
is probably a blown lamp, or a malfunction in the relay.
Engine oil level sensor
connector (Harness side)
3. When the engine is started, check that the oil level warning
lamp turns off.
If the oil level warning lamp will not go out, disconnect
the connector of the oil level relay and measure the voltage
of the No.1 terminal on the harness side of the connector
while idling the engine in order to confirm that it is the
same as the battery voltage.
NOTE
(1) If the voltage at the connector is the same as the
battery voltage, the problem is probably a malfunction
of either the oil level relay or the oil level sensor.
(2) If the voltage at the connector is lower than the battery
voltage, the problem is probably a malfunction of either
the alternator or the wiring harness.
4. Disconnect the oil level sensor connector. Check that
the oil level warning lamp illuminates after approximately
40 seconds.
If the oil level warning lamp does not illuminate, replace
the oil level relay.
12-6
ENGINE LUBRICATION - On-vehicle Service
Engine oil level sensor
connector (Equipment side)
5. Check the continuity between the oil level sensor
terminals.
Engine oil temperature
Oil level
Continuity
At 50_C or lower
Normal
(proper volume)
Continuity
Low (drained)
Continuity
Normal
(proper volume)
Continuity
Low (drained)
No continuity
At 60_C or higher
6. If there is a defect, replace the oil level sensor.
9 Nm
Engine oil level sensor
Oil pan
ENGINE LUBRICATION - Engine Oil Cooler <6A1>
ENGINE OIL COOLER <6A1>
12-7
12100130155
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
Engine Coolant Draining and Supplying
(Refer to GROUP 14 - On-vehicle Service.)
2
4
64 - 69 Nm
5
2
Removal steps
1. Oil filter (Refer to P.12-4.)
2. Water hose connection
3. Oil cooler bolt
"AA
4. Engine oil cooler
5. O-ring
INSTALLATION SERVICE POINT
"AA ENGINE OIL COOLER INSTALLATION
Insert the engine oil cooler positioning tab into the cylinder
block rib, and tighten it with the oil cooler bolt.
INSPECTION
D
D
12100140110
Check the water hoses for crack, damage, clogging or
deterioration.
Check the oil cooler bolt for clogging or deformation.
12-8
ENGINE LUBRICATION - Engine Oil Cooler <4D6>
ENGINE OIL COOLER <4D6>
12100130162
REMOVAL AND INSTALLATION
Pre-removal and Post-installation Operation
D Engine Oil Draining and Supplying (Refer to P.12-3.)
D Front Bumper Removal and Installation
(Refer to GROUP 51.)
Air Guide Panel Removal and Installation
2
29 - 34 Nm
39 - 44 Nm
3
12 Nm
5 Nm
39 - 44 Nm
5 Nm
5 Nm
4
39 - 44 Nm
Removal steps
1. Hose assembly and joint connection
2. Engine oil cooler
3. Joint
"AA
4.
5.
6.
7.
Return hose assembly
Feed hose assembly
Return tube assembly
Feed tube assembly
INSTALLATION SERVICE POINT
Eye joint pin
"AA RETURN TUBE ASSEMBLY INSTALLATION
Insert the eye joint pin into the oil filter bracket hole and
install the return tube assembly.
ENGINE LUBRICATION - Engine Oil Cooler <4D6>
INSPECTION
D
D
D
D
12-9
12100140127
Check for foreign material between oil cooler fins.
Check the oil cooler fins for bend or damage.
Check the oil cooler hoses for crack, damage, clogging
or deterioration.
Check the eye bolts for clogging or deformation.
NOTES
