Automatic Transmission Fluid - Subaru 2002 IMPREZA Service Manual

2. Automatic Transmission Flu-
id
A: INSPECTION
1) Check the level of ATF.
(1) Raise the ATF temperature to 70 to 80°C
(158 to 176°F) from 20 to 30°C (68 to 86°F)
(when cold) by driving a distance of 5 to 10 km (3
to 6 miles).
NOTE:
The level of ATF varies with fluid temperature. Pay
attention to the fluid temperature when checking oil
level.
(A) ATF level gauge
(B) Upper level
(C) Lower level
(2) Make sure the vehicle is level. After select-
ing all positions (P, R, N, D, 3, 2, 1), set the se-
lect lever in "P" range. Measure the fluid level
with the engine idling.
NOTE:
After running, idle the engine for one or two min-
utes before measurement.
(3) If the fluid level is below the center between
upper and lower marks, add the recommended
ATF until the fluid level is found within specified
range (above the center between upper and
lower marks). When the transmission is hot, the
level should be above the center of upper and
lower marks, and when it is cold, the level
should be found below the center of these two
marks.
NOTE:
• Use care not to exceed the upper limit level.
• ATF level varies with temperature. Remember
that the addition of fluid to the upper limit mark
when the transmission is cold will result in overfill-
ing of fluid.

AUTOMATIC TRANSMISSION FLUID

B3M1020B
AT-9
AUTOMATIC TRANSMISSION
(4) Fluid temperature rising speed
• By idling the engine
Time for temperature rise to 70°C (158°F) with at-
mospheric temperature of 0°C (32°F): More than
25 minutes
<Reference>
Time for temperature rise to 30°C (86°F) with atmo-
spheric temperature of 0°C (32°F): Approx. 8 min-
utes
• By running the vehicle
Time for temperature rise to 70°C (158°F) with at-
mospheric temperature of 0°C (32°F): More than
10 minutes
(5) Method for checking fluid level upon delivery
or at periodic inspection
Check fluid level after a warm-up run of approx.
10 minutes. During the warm-up period, the au-
tomatic transmission functions can also be
checked.
2) Check the fluid for leaks.
Check for leaks in the transmission. If there are
leaks, it is necessary to repair or replace gasket, oil
seals, plugs or other parts.
B: REPLACEMENT
1) Lift-up the vehicle.
2) Drain the ATF completely.
CAUTION:
Directly after the engine has been running, the
ATF is hot. Be careful not to burn yourself.
NOTE:
Tighten the ATF drain plug after draining the ATF.
Tightening torque:
25 N·m (2.5 kgf-m, 18.1 ft-lb)
(A) Oil pan
(B) Drain plug (ATF)
(C) Differential oil drain plug
3) Lower the vehicle.
B3M1036B