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Old 04-19-2008, 01:50 AM   #1
Jose99
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Join Date: Nov 2007
Chapter/Region: Tri-State
Location: Lakehurst NAS, NJ
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Silver Bullet

Default Auto Trans Fluid Question(nooB)

Im just checked my trans fluid and its pretty dark im feeling that its time to change it out its an automatic 20052.5rs and i need help with what would be the best fluid for the trans and differentials so i can do the change thanks for the help
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Old 04-19-2008, 09:08 AM   #2
mikeythejew
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Valvoline Maxlife ATF if you need a fluid obtainable outside of a dealership as it is formulated for import trannys better then most other fluids. For the diff I would use valvoline synpower 75w90.
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Old 04-19-2008, 11:30 AM   #3
DrD
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does it smell burnt? Not sure about Subaru auto transmissions (I have only had manuals) but for our van, a drain/fill of the transmission gets only a very small portion of the fluid - Honda's "procedure" is to drain fill 5 times (with some driving between cycles, making sure it goes through all the gears) which gets 90% or so of the fluid (via serial dilution) - not the most fun way to change it, but Honda stronly recommends against having the system flushed.
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Old 04-19-2008, 01:20 PM   #4
bulwnkl
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I'd agree with mikey's suggestion for MaxLife DEX/MERC ATF. I've used 'universal' or ATF+4 ATFs from SuperTech, Valvoline, and Schaeffer with excellent results. ATFs are not quite so very diverse right now as the automakers would have us believe.
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Old 04-19-2008, 10:01 PM   #5
awdguy
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make sure to get a new trans filter if you change the oil
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Old 04-20-2008, 02:41 AM   #6
formula91
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Wrong, Subaru's AT Filter is a non-maintenance item and will last as long as the car does.
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Old 04-20-2008, 11:17 PM   #7
DrD
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even so, since it's a relatively inexpensive item, and a clean filter is better (in terms of acting as a flow restrictor) than a dirty one, you might as well change it out when you change the transmission fluid...
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