DIY 04 2.5Rs Oil Change
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This is a discussion on DIY 04 2.5Rs Oil Change within the Maintenance, service, and repair forums, part of the Tutorials & DIY category; Here's a step by step instruction to change engine oil on 2004 Impreza 2.5Rs. Step will be same as 02~05 ...

  1. #1
    Registered User AspirinWhite's Avatar
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    DIY 04 2.5Rs Oil Change

    Here's a step by step instruction to change engine oil on 2004 Impreza 2.5Rs. Step will be same as 02~05 and it will be similar to WRX. Filter location and the oil capacity is slightly different on the WRX.

    First, get all the supplies
    -5qt. of 5W30 Engine Oil
    -2 2 ton Jack Stands
    -1 2 ton floor jack
    -1 Wrench with 14mm socket
    -1 Oil filter wrench
    -1 Drain bolt and washer
    -1 3593 Oil filter
    -1 funnel (if needed)
    -1 empty 1 gallon milk container (to store dirty oil)
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    2003 WRB WRX Stg. 4
    2008 HTM xB

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    Registered User AspirinWhite's Avatar
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    Jack the car up by using the floor jack. Make sure the E-Brake is applied! Put up a wooden block or something behind the rear wheels to prevent the car to roll back. Use Jack stands each side of the vehicle so it'll stay up there. Use 2 Jack stands because just one isn't safe.
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    2003 WRB WRX Stg. 4
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    Registered User AspirinWhite's Avatar
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    Crawl under the car and look for the Oil drain bolt. It is very easy to find. For 2.5Rs (pictured), it is right next to the header. For WRX, it's not difficult find at all!
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    2003 WRB WRX Stg. 4
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    Registered User AspirinWhite's Avatar
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    Use the 14mm Wrench to unscrew the Drain bolt. WAIT! Don't unscrew it all the way! Once it's loosen, place a bucket right under it so you don't spill oil everywhere. (If you look to the left, there's the filter!)
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    Registered User AspirinWhite's Avatar
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    Let all those dirty oil drain out! Remember, warmer oil will run faster than cold oil. Just let it all drain for a minute
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    Registered User AspirinWhite's Avatar
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    While the oil is being drained, you can remove the oil filter while at it. reach your hand in there and try to unscrew the filter by hand. If it's too tight, use the oil filter wrench. DO NOT REMOVE THE FILTER YET!
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    Registered User AspirinWhite's Avatar
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    When the oil filter is loosened enough, some of the oil will start to leak. be sure to collect those on the bucket! No body likes an oily garage floor. Once the leak has stopped, remove the oil filter and discard.
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    Registered User AspirinWhite's Avatar
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    Get the Spankin' new oil filter out of the box and lubricate the rubber seal of the filter. Just dip you finger in the old oil and apply it.
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    Screw the new filter back into where it should be. just tighten it with your hand. No need to overtighten it or you'll have a hard time removing it when changing it again.
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    Registered User AspirinWhite's Avatar
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    Don't forget to put the new drain bold and the washer back on the oil pan. Don't overtighten it. Same reason as the oil filter.
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    Registered User AspirinWhite's Avatar
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    Now crawl outta there and go look up in the engine bay. Remove that yellow engine oil cap and let's put some new oil in!
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  13. #12
    Registered User AspirinWhite's Avatar
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    place the funnel and pour in that oil. 4.2qt for 2.5Rs and 4.8qt for WRX. Careful not to spill!
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    Registered User AspirinWhite's Avatar
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    Leave out proper amount of engine oil in the 5qt container. Use the meter on the side of the container to measure. Leave 0.8qt. for 2.5Rs and 0.2qt for WRX.
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    2003 WRB WRX Stg. 4
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    Registered User AspirinWhite's Avatar
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    Lower the car down and start the engine. Press on the gas pedal lightly so the new oil can run around the engine.

    Mark the millege on the car and you're done! Do this every 3000 miles!



    Until then... Go Rally!!!
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    Last edited by AspirinWhite; 01-10-2006 at 11:59 PM.
    2003 WRB WRX Stg. 4
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    Administrator Trainrex's Avatar
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    Thanks for the nice writeup. I added it to the FAQ sticky

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