Subaru 2003 Impreza - Manual (Page 349)

IMPREZA(NA) A1850BE-A (ENGLISH)
Maintenance and service
11-26
Turbo model
Check the oil level monthly.
1. Park the vehicle on a level surface and stop the
engine.
2. Pull out the dipstick, wipe it clean, and insert it
again.
1) Upper level 2) Lower level
3. Pull out the dipstick again and check the oil level
on it. If it is below the lower level, add oil through the
dipstick hole to bring the level up to the upper level.
J Recommended grade and viscosity
Each oil manufacturer has its own base oils and ad-
ditives. Never use different brands together.
Oil grade: API classification GL-5