Subaru 2001 LEGACY Service Manual page 67

The proper viscosity helps vehicle get good cold
and hot starting by reducing viscous friction and
thus increasing cranking speed.
NOTE:
¼ When replenishing oil, it does not matter if the oil
to be added is a different brand from that in the
engine; however, use oil having the API classifica-
tion and SAE viscosity No. designated by
SUBARU.
¼ If vehicle is used in desert areas with very high
temperatures or for other heavy duty applications,
the following viscosity oils may be used:
API classification: SJ or SH
SAE Viscosity No.: 30, 40, 10W-50, 20W-40,
20W-50
6) Close engine oil filler cap.
7) Start engine and warm it up for a time.
8) After engine stops, recheck the oil level.
If necessary, add engine oil up to upper level on
level gauge.
2.5 L model
ENGINE OIL
3.0 L model
GI0015A
GI0016A
PM-7
Periodic Maintenance Services
B2M3884