The 2006 Subaru Impreza has a 2.5 L 4Cylinder engine that needs SAE 5W-30 Synthetic Motor Oil. It has a capacity of 4.2 quarts with a filter and the torque for the drain plug iS32.5 ft/lbs. Oil will help keep the engine clean and running smoothly. The oil and filter should be changed every 5,000 to 7,000 miles or sooner if You drive in more extreme conditions. The price per quart is around $5 to $12 or it would cost about $21 to $50 to fill up the full 4.2 quarts. It's pretty simple to do an oil change and only takes about 5 to 20 minutes. Some of the tools needed are drain pan, ratchet, socket and socket extensions.
John A.
January 2, 2020
Subaru offers three versions of the 2.5L box-4 engine for the 2006 Impreza. There is the non-turboed 2.5L box-4 version the turboed 2.5L box-4 version (engine code EJ255 E Turbo) and the 2.5L box-4 version (engine code EJ257 F Turbo). The non-turbo 2.5L uses 4.4 quarts of 5W30 synthetic oil. The turboed 2.5L inline-4 (engine code EJ255 E Turbo) takes 4.2 quarts of 5W30. The 2.5L (engine code EJ257 F Turbo) requires 4.5 quarts of synthetic formulated 5W30 oil.
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