Subaru 2012 Impreza Owner's Manual page 405

! Alternative engine oil
If the SUBARU approved oil is unavailable, the following alternative oil can be used.
NOTE
Each quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on the
temperature and other factors.
! Non-turbo models
Oil grade
API classification SM or SN with
the words
"ENERGY CONSERVING" or
"RESOURCE CONSERVING"
or
ILSAC GF-4 or GF-5, which can
be identified with the ILSAC
certification mark (Starburst
mark)
SAE viscosity No. and
applicable temperature
0W-20 synthetic oil is the required oil
for optimum engine performance and
protection. Conventional oil may be
used if synthetic oil is unavailable.
*: If 0W-20 synthetic oil is not available,
5W-30 or 5W-40 conventional oil may
be used if replenishment is needed but
should be changed to 0W-20 synthetic
oil at the next oil change.
12-5
Specifications
Engine oil capacity
– Adding the oil from low level to
full level:
1.1 US qt (1.0 liter, 0.9 Imp qt)
– Changing the oil and oil filter:
5.3 US qt (5.0 liters, 4.4 Imp qt)
– CONTINUED –