Mitsubishi Lancer Evolution X. Manual - part 83

ON-VEHICLE SERVICE

TSB Revision

ENGINE LUBRICATION

12-5

3. Remove the engine room under cover extension. (Refer to 

GROUP 51, Under Cover 

P.51-15

).

4. Remove the drain plug to drain oil.
5. 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.

Tightening torque: 39 ± 5 N⋅ m (29 ± 3 ft-lb)

CAUTION

• Do not use conventional petroleum based motor oil. 

Using conventional motor oil may cause engine or tur-
bocharger damage.

• Do not used "blends" of conventional oil and synthetic 

oil.

• If engine oil other than 5W-30 is used, the engine may 

be seized by poor lubrication.

6. Refill the specified quantity of oil.

Specified Engine Oil: Engine oils displaying ILSAC 

certification symbol ("Starburst" symbol) or con-
forming to the API classification SM or higher

Total quantity: 5.6 dm

3

 (5.9 quarts)

7. Install the engine oil filler cap.
8. Let the engine run for a few minutes.
9. Stop the engine, and then check the oil level using the oil 

dipstick after a few minutes.

10.Install the engine room under cover extension. (Refer to 

GROUP 51, Under Cover 

P.51-15

).

ENGINE OIL FILTER REPLACEMENT

M1121001101836

Required Special Tool:

• MB991610: Oil Filter Wrench

1. Start the engine and allow it to warm up until the 

temperature of the coolant reaches 80 − 90° C (176 − 194° F)

WARNING

Use care as oil could be hot.

2. Remove the engine oil filler cap.
3. Remove the engine room under cover extension. (Refer to 

GROUP 51, Under Cover 

P.51-15

).

4. Remove the drain plug to drain oil.

AC708804AB

Engine 
oil pan side

Drain plug gasket

AC902123 AB

ON-VEHICLE SERVICE

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ENGINE LUBRICATION

12-6

5. Use the respective tool in the following table to remove the 

engine oil filter.

6. Clean the filter bracket side mounting surface and ensure 

the old O-ring has been removed.

7. Apply a small amount of engine oil to the O-ring of the new 

oil filter.

8. Screw on the oil filter by hand until it touches the surface of 

the flange and then tighten it with an oil filter wrench.

9. Install the drain plug and refill engine oil. (Refer to 

P.12-4

).

10.Rev the engine a few times, and check to be sure that no 

engine oil leaks at the oil filter.

11.Install the engine room under cover extension. (Refer to 

GROUP 51, Under Cover 

P.51-15

).

OIL PRESSURE CHECK

M1121002301747

1. Check engine oil level.
2. Remove the engine oil pressure switch. (Refer to Oil 

Pressure Switch Removal And Installation 

P.12-7

.)

3. Install the engine oil pressure gauge.

NOTE: Use a 1/8 pipe thread adapter.

4. Run the engine to warm it.
5. After the engine has been warmed up, check that engine oil 

pressure is within the standard value.

Standard value:

At idle: 29 kPa (4.2 psi) or more
At 3,500 r/min: 294 − 686 kPa (43 − 100 psi)

6. Remove the engine oil pressure gauge.
7. Install the engine oil pressure switch. (Refer to Oil Pressure 

Switch Removal And Installation 

P.12-7

.)

Number

Special tool

MD356000

Oil filter wrench 
(MB991610) or 
equivalent

Number

Special tool

Tightening 
torque

MD356000

MB991610 or 
equivalent

Approximately 
3/4 turn [14 ± 2 

N⋅ m (124 ± 17 

in−lb)]

AC103249AL

MB991610
or equivalent

AC103250 AG

O-ring

AK703776 AE

Engine oil pressure
switch

Throttle body

ENGINE OIL PRESSURE SWITCH

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ENGINE LUBRICATION

12-7

ENGINE OIL PRESSURE SWITCH

REMOVAL AND INSTALLATION

M1121002501149

Required Special Tool:

• MB992118: Oil Pressure Switch Wrench

Pre-removal and post-installation operation
• Engine Room Under Cover Front A, B and Engine Room 

Under Cover Center Removal and Installation (Refer to 

GROUP 51, Under Cover 

P.51-15

).

AC709399AB

1

5

3

4

10 ± 2 N·m
89 ± 17 in-lb

23 ± 6 N·m
17 ± 4 ft-lb  

2

Removal steps 

1.

Engine control wiring harness 
clamp connection

2.

Starter wiring harness clamp

3.

Intake manifold stay (front)

4.

Oil pressure switch connector 
connection

<<

A

>>

>>

A

<<

5.

Oil pressure switch

Removal steps (Continued)

ENGINE OIL PRESSURE SWITCH

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ENGINE LUBRICATION

12-8

REMOVAL SERVICE POINT

.

<<A>> OIL PRESSURE SWITCH REMOVAL

CAUTION

The sealant is applied to the bolt. Remove the bolt with 
care not to break it.
Use special tool MB992118 to remove the oil pressure switch.

INSTALLATION SERVICE POINT

.

>>A<< OIL PRESSURE SWITCH INSTALLATION

1. Apply sealant to the oil pressure switch thread.

Specified sealant: Three bond 1215 or equivalent

CAUTION

After the installation, until a sufficient period of time (one 
hour or more) elapses, do not apply the oil or water to the 
sealant application area or start the engine.
2. In the same manner as removal, use special tool MB992118 

to tighten the oil pressure switch to the specified torque.

Tightening torque: 10 ± 2 N⋅ m (89 ± 17 in−lb)

NOTE: Install the engine oil pressure switch immediately 
after applying sealant.

AK502606 AD

MB992118

AK402699

1 mm
(0.04 in)

5 mm
(0.2 in)

AD

AK502606 AD

MB992118