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Old 07-17-2010, 02:42 PM   #1
Joy Driver
Scooby Newbie
Member#: 163836
Join Date: Nov 2007
Chapter/Region: NWIC
Location: Pacific NW
2008 Impreza 4d prem
satin white pearl

Default Which auto transmission fluid for a 2008 impreza 2.5i

Hi, I'm coming up on 30k on my daughters 2008 impreza 2.5i automatic transmission.

I'd like to do a transmission fluid flush or at the least a drain and fill.

Sorry, the car/manual isn't at my house now, so I can't check the manual.

Can anyone let me know what the proper auto tranny fluid or equivalent should be used?

I know with my volvo, I can use Toyota TIV fluid as a much cheaper but exact replacement. So I'm hoping there is a cheaper/exact alternative for the subaru.

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Old 07-18-2010, 03:58 AM   #2
Henry H
Scooby Newbie
Member#: 184330
Join Date: Jul 2008
Location: Southern California
2008 Impreza 2.5i
Dark Grey Metallic


Just go with OEM at your Subaru dealer. A flush shouldn't be necessary.
You'll need a T-70 Torx bit, long-neck funnel and approximately 5qt of ATF (I drained approx 3.22kg of fluid which is about 4.1 quarts of ATF). Yes, I weigh my fluids so when I replace it, I don't have to do the top-off guessing game.

But as for what the manual says:
- Genuine Subaru Automatic Transmission Fluid Type-HP
- Castrol Transmax J
- Dexron III ATF (temporary only)
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