Oil Change 04-07 Subaru WRX/STi DIY:

10.) Make sure the car is off. Go ahead and get under the car again and re attach the brush guard to the bottom of the car (if it is hot, you can wait for it to get cooler, but if you are careful, you should be fine). Get the car off the jack stands and take that car for a ride. Enjoy!

Oil Filters:

Oil:

Miscellaneous parts:

Subaru 11126AA000 Drain Plug Gasket

GENUINE OEM SUBARU MAGNETIC DRAIN PLUG PN#32103KA000 STI WRX FORESTER IMPREZA

Genuine Subaru Turbo Banjo Bolt with Screen – 14445AA090
Subaru 803912040 Banjo Washer

Items Required:
2 Ton or greater rated Jack Stands
Floor or Bottle Jack
Oil Pan
12mm Socket or Wrench
17mm Socket
Ratchet of desired drive for Sockets used (I used 1/2 inch drive for both 12mm and 17mm sockets)
Torque Wrench (Must go to at least 50 ft/lbs)
Gloves (Oil changes can get messy, quickly)
Oil Filter Wrench
Oil Filter: Check at the end of the post for Filters
4.8 US quarts of 5W-30 Oil This is what is required for the 04-07 STi. Make sure to check your owners manual for correct amount of oil needed.