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2002 Subaru Legacy Outback, 2.5L H4 with a custom-built cold-air intake, Red and Baige with an aerodynamically designed roof rack
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8 Posts
Discussion Starter · #1 ·
This doesn't sound right, but there is a dipstick in the transmission, DRY!!!! 80/90 Gear oil or what????
 

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02 OBW
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131 Posts
Wow, that's no good, hopefully you caught it before anything bad happened...

Auto or Manual? Only difference is the amount of gear oil that goes in. 75w-90 is what is called for.

Any conventional oil will be fine - there seem to be only a few synthetics that work "well".
 

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2006 Outback 2.5i LTD MT
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70 Posts
Search the forum a bit... many here recommend NOT using Mobil-1 synthetic for manual transaxle.
 

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(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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18,222 Posts
where did the oil go? You need to check underneath for leaks. Definitely fix any leaks before putting any high $$$$$$ fluid back in.

The manual tranny can be picky about fluid. One of the best is Subaru Extra-S. Some dealerships repackage it or, if you bring a conatainer, will sell you some from the big bucket they get.

Fred Beans will sell you quarts. (OEM Car Parts | Performance Car Parts | Fred Beans Parts Doylestown PA)

Any GL-5 is fairly safe, but many folks have shifting problems with most synthetics, or anything with super-slippery additives. The problem is, the diff shares the same fluid as the transmission and finding a fluid good for both can be tricky.

there's a huge thread about it at NASIOC.
 

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2006 Outback 2.5i LTD MT
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70 Posts
Any GL-5 is fairly safe, but many folks have shifting problems with most synthetics, or anything with super-slippery additives. The problem is, the diff shares the same fluid as the transmission and finding a fluid good for both can be tricky.

there's a huge thread about it at NASIOC.
I definitely agree. I'm using a Redline cocktail that I'm not very fond of. Shifting is a bit less smooth 1-2, 2-3 than before. Don't know what I'll use next time around though.
 

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(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
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18,222 Posts
I definitely agree. I'm using a Redline cocktail that I'm not very fond of. Shifting is a bit less smooth 1-2, 2-3 than before. Don't know what I'll use next time around though.

yeah, I liked 100% Redline LW Shockproof for the first few thousand miles - but now I have some 'kickback' if I'm slow going 2 -> 3 . Shifting fast is great! Still can get into first while rolling 10-15 mph. maybe it get too hot here for the LightWeight?

very weird.

Thinking about an Extra-S plus Redline HW combo but - might just get all extra-S.
 

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2002 Subaru Legacy Outback, 2.5L H4 with a custom-built cold-air intake, Red and Baige with an aerodynamically designed roof rack
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8 Posts
Discussion Starter · #7 ·
Thanks for the info guys, all the problems are squared away with no problems following
 
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