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Old 10-18-2019, 03:44 AM   #1
Scooby Newbie
Member#: 399260
Join Date: Aug 2014
Default How can I keep my Subie running forever?

Kinda right there in the title. I have a 2004 Impreza Outback. EJ251 (2.5L, N/A) 5MT. Has just over 130,000 miles. Are there any not-so-obvious things I should be doing to keep my car running just as new as the day she was built? Secondly, is there anything I can do to “modernize” my car to make sure she is running at peak performance and efficiency. (Do ECU’s need software updates???)

At about 100,000 miles I had head gaskets, belts/pulleys, water pump, and clutch replaced.

List of things I keep up on:
New synthetic oil/filter every 5,000 miles
Fuel filter
Spark plugs
Air filter
Tires (alignments, air, etc.)
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Old 11-13-2019, 01:38 PM   #2
Scooby Newbie
Member#: 508286
Join Date: Nov 2019

You've basically got it going, make sure that you keep all mechanical parts in good condition i.e water pump, timing parts, spark plugs need replacing every 100k I think. If youd want your car to run better, possibly, flashing your ecu to bump the power up on it (not by a whole bunch) can keep it running smoothly. If you can keep simple maintenance on it consistently in the places where you need it. It could last for awhile.
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Old 11-21-2019, 12:55 PM   #3
Scooby Newbie
Member#: 508593
Join Date: Nov 2019
Chapter/Region: Tri-State
Location: NY
2003 2.5 NA OBS
Green/Gold Two Tone


My D/S Rear wheel bearing went to **** at 135K, so I'd watch out for those soon. Definitely NOT a fun job IMO. Ended up swapping an entire spindle assembly.

Check out your Front LCA's for rust too as there's been a recall for them.

Might want to take a peek at that filler neck too while you're at it.
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Old 11-21-2019, 01:04 PM   #4
Scooby Specialist
Member#: 239822
Join Date: Mar 2010
Chapter/Region: South East
Location: America's Penis
2010 WRX


This is a good thread on this topic:

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