Subaru 2003 Impreza - Manual (Page 335)

IMPREZA(NA) A1850BE-A (ENGLISH)
Maintenance and service
11-12
ing washer after the oil has completely drained out.
1) Oil filter
6. Remove the oil filter with an oil filter wrench.
7. Before installing a new oil filter, apply a thin coat
of engine oil to the seal.
8. Clean the rubber seal seating area of the lower
crank case and install the oil filter by hand turning.
Be careful not to twist or damage the seal.
9. Tighten it approximately two-thirds of a turn after
the seal makes contact with the lower crank case.
CAUTION
Never over tighten the oil filter because that
can result in an oil leak.
10. Pour engine oil through the filler neck.
Oil capacity (guideline):
Non-turbo models:
4.2 US qt (4.0 liters, 3.5 Imp qt)
Turbo models:
4.8 US qt (4.5 liters, 4.0 Imp qt)
The oil quantity indicated above is only guideline.
The necessary quantity of oil depends on the quan-
tity of oil that has been drained. The quantity of
drained oil differs slightly depending on the temper-
ature of the oil and the time the oil is left flowing out.
After refilling the engine with oil, therefore, you must
the dipstick to confirm that the level is correct.
11. Start the engine and make sure that no oil leaks
appear around the filter’s rubber seal and drain
plug.
12. Run the engine until it reaches the normal oper-
ating temperature. Then stop the engine and wait a
few minutes to allow the oil drain back. Check the oil
level again and if necessary, add more engine oil.