Subaru Impreza 2002 Service Manual page 765

PERIODIC MAINTENANCE SERVICES
18.Front & Rear Differential Oil
A: REPLACEMENT
1. FRONT DIFFERENTIAL (MANUAL
TRANSMISSION)
For MT vehicle, manual transmission oil works as
differential oil to lubricate differential. Refer to
"Transmission Oil". <Ref. to PM-25, Transmission
Oil.>
2. FRONT DIFFERENTIAL (AUTOMATIC
TRANSMISSION)
1) Drain the differential gear oil by removing drain
plug after allowing the engine to cool for 3 to 4
hours.
NOTE:
Before starting work, cool off the engine well.
2) Reinstall the drain plug after draining differential
gear oil and tighten it to the specified torque.
Tightening torque:
44 N·m (4.5 kgf-m, 32.5 ft-lb)
NOTE:
• Be sure to place a gasket between the transmis-
sion case and drain plug.
• Replace the gasket with a new one.
• Each oil manufacturer has its base oil and addi-
tives. Thus, do not mix two or more brands.
3) Fill differential gear oil through the oil level
gauge hole up to the upper point of level gauge.
Differential gear oil capacity:
1.1 — 1.3 2 (1.2 — 1.4 US qt, 1.0 — 1.1 lmp qt)
FRONT & REAR DIFFERENTIAL OIL
GI0045
GI0046A
PM-28
3. REAR DIFFERENTIAL
1) Drain the oil by removing drain plug.
2) Remove the filler plug for quick draining oil.
3) Reinstall the drain plug after draining oil.
NOTE:
• Apply fluid packing to the drain plug threads be-
fore installation in Except Non-turbo AT model.
• Non-turbo AT model uses a new aluminum gas-
ket.
Fluid packing:
Three Bond 1105
Tightening torque:
Except 1.6 L and Non-turbo AT model:
49.0 N·m (5.0 kgf-m, 36.2 ft-lb)
1.6 L and Non-turbo AT model:
34 N·m (3.5 kgf-m, 25.3 ft-lb)
4) After installing the drain plug onto rear differen-
tial gear case firmly, fill oil up fully to the mouth of
filler plug.
• 1.6 L and Non-turbo AT MODEL
Filler bolt
Drain bolt
• Except 1.6 L and Non-turbo MODEL
Drain plug
Oil capacity:
0.8 2 (0.8 US qt, 0.7 lmp qt)
NOTE:
Each oil manufacturer has its base oil and addi-
tives. Thus, do not mix two or more brands.
GI0173
Filler plug
GI0174