Subaru 2002 IMPREZA Service Manual page 387

B: INSTALLATION
1) Install in the reverse order of removal.
Tightening torque:
T: 54 N·m (5.5 kgf-m, 40 ft-lb)
NOTE:
Always use a new O-ring.
ENGINE OIL COOLER
C: INSPECTION
1) Check that the coolant passages are not
clogged using air blow method.
2) Check the mating surfaces of cylinder block, O-
ring groove and oil filter for damage.
G2M0784
LU-23
LUBRICATION