Both the 2.2l boX4 base engine and the 2.5l boX4 optional engine in the 2001 Subaru Impreza requireS4.2 quarts of 5w30 oil. But if You are considering changing Your own oil not so fast. Todays car design and equipment does not make it too easy to change the oil at home and especially the filter. It can be very tricky and might need special tools, which vary from manufacturer to manufacturer. In certain cases, accessing the oil filter may entail removal of other components from the engine bay or sump guard. So unless You are experienced with working on Your car Yourself, its a job best left to the professionals. What You can do easily do at home is top-up various oils and fluids if their level has dropped down.
John A.
January 2, 2020
Both the 2.2L box-4 base engine and the 2.5L box-4 optional engine in the 2001 Subaru Impreza requires 4.2 quarts of 5W30 (preferred) 10W30 or10W40 (above -4 F) 30 weight, 40 weight, 20W40, or 20W50 (above 95 F or heavy duty operation).
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