[Singletrack]

803926070 copper clutch side gasket (subaruparts.com)
803916080 copper oil pan side gasket (subaruparts.com)
I used 75w90 Valvoline Dino Oil (Napa) - capacity is 4.3 qts - but I used about 4 qts.

The oil pan side bolt is 14mm and should be torqued to 44 Nm(32.5ft-lb), the clutch side bolt is 21mm and should be torque to 70Nm(51.6ft-lb).

I pulled the car up on ramps, pulled both plugs to start draining, then jacked up the rear by the diff to push the rest of the oil out. It takes quite a while for all the oil to stop coming out. The larger plug is magnetic and had a fair amount of metal pieces on it - about what I would expect for a new tranny with 30k miles. Let the rear end down, then fill with oil through the same hole you check the level through (below the top mount ic).

Hope that helps someone : )

[Rev]

What about dropping the tranny oil pan to clean the internal filter? I might be doing that on my next tranny flush ...

[solbergfan]

Singletrack, THANK YOU for posting the part #'s for the crush washers. I called my local dealer the other day to order them and he sends me an engine oil drain plug washer-I called him back and he tells me it is the right one for the trans. I tell him it is wrong and there should be 2 different washers-he argues w/me and tells me there are only 2 different trans drain plug washers for every Subie-then I explain that the STi has a 6 speed and is completely different than any other Subaru trans-he again tells me the same thing as before. I asked him to look the part up on the catalog-and he refuses, so I hung up on him. It is absolute BS that these cars have been out for 3 years now, yet most Subaru parts guys are clueless that the STi uses a number of diffferent parts than any other Subaru. Another example is the rear LSD oil. I called 3 dealers and none of them knew the STi uses a different gear oil in the rear, so of course they didn't know what I was talking about-I ended up getting Motul 90PA LSD oil that is compatible w/the Subaru stuff. I really wish they would educate their parts and service guys a little better when it comes to these cars.

[Singletrack]

Originally Posted by solbergfan

Singletrack, THANK YOU for posting the part #'s for the crush washers. I called my local dealer the other day to order them and he sends me an engine oil drain plug washer-I called him back and he tells me it is the right one for the trans. I tell him it is wrong and there should be 2 different washers-he argues w/me and tells me there are only 2 different trans drain plug washers for every Subie-then I explain that the STi has a 6 speed and is completely different than any other Subaru trans-he again tells me the same thing as before. I asked him to look the part up on the catalog-and he refuses, so I hung up on him. It is absolute BS that these cars have been out for 3 years now, yet most Subaru parts guys are clueless that the STi uses a number of diffferent parts than any other Subaru. Another example is the rear LSD oil. I called 3 dealers and none of them knew the STi uses a different gear oil in the rear, so of course they didn't know what I was talking about-I ended up getting Motul 90PA LSD oil that is compatible w/the Subaru stuff. I really wish they would educate their parts and service guys a little better when it comes to these cars.

No problem man - yah I hear you loud and clear on that...it's totally ridiculous. I emailed subaruparts.com and they looked up everything for me and got it right...the first time. Not only do they have the lowest prices, but they are also competent and extremely personable. I ordered the LSD diff oil from them as well, but that goes in tomorrow.

Quick question for you - when changing the rear diff oil, what size socket did you use for the top plug with the temp sensor in it? Do you remove the sensor from inside the top plug, or do you disconnect the harness and then remove the entire plug? I'm sort of confused about that. Thanks for any help!

[Singletrack]

Originally Posted by STi_Thunder

What about dropping the tranny oil pan to clean the internal filter? I might be doing that on my next tranny flush ...

Yah I've seen that mentioned. I don't think it is necessarry really; that oil pan has a magnet and strainer (as you mention) inside it to catch any metal that works its way down there. Maybe at 90k or 120k I'll think about it ; ) If you do take it apart you will need THREE BOND 1215 (Part No. 004403007) or some equivalent liquid gasket when you put it back together. Take pics if you do!

[solbergfan]

Originally Posted by Singletrack

Quick question for you - when changing the rear diff oil, what size socket did you use for the top plug with the temp sensor in it? Do you remove the sensor from inside the top plug, or do you disconnect the harness and then remove the entire plug? I'm sort of confused about that. Thanks for any help!

I just used a large adjustable wrench and removed the large bolt that houses the diff temp sensor-I removed the sensor by itself first, but the hole is too small to add the gear oil it so it's just easier to remove the sensor and housing all together-oh yeah, unplug it first.

[Singletrack]

Originally Posted by solbergfan

I just used a large adjustable wrench and removed the large bolt that houses the diff temp sensor-I removed the sensor by itself first, but the hole is too small to add the gear oil it so it's just easier to remove the sensor and housing all together-oh yeah, unplug it first.

Thanks bro - doing this in a few.

[Rev]

Originally Posted by solbergfan

I just used a large adjustable wrench and removed the large bolt that houses the diff temp sensor-I removed the sensor by itself first, but the hole is too small to add the gear oil it so it's just easier to remove the sensor and housing all together-oh yeah, unplug it first.

I didn't have a need to remove the bigger bolt where the sensor terminal screws on. I just unclip the sensor, and use a small wrench to undo that end of the sensor .. I have a small pump with a clear hose that first right in that hole. So far it's worked for me ...

[wdb]

Nice info. I'm adding this and your other "what you need" thread to the "Threads of Interest" Sticky for this forum.

[SubyFi]

I was having trouble trying to find the 803916080 copper oil pan side gasket around here and online.

Most of the Subaru parts counter guys say their mechanics usually only replace them on the second gear oil change or if the gasket looks damaged.

[Singletrack]

Originally Posted by SubyFi

I was having trouble trying to find the 803916080 copper oil pan side gasket around here and online.

Most of the Subaru parts counter guys say their mechanics usually only replace them on the second gear oil change or if the gasket looks damaged.

Yah the washer looked pretty good when I took it off. I would guess you could re-use it.

[Singletrack]

Originally Posted by wdb

Nice info. I'm adding this and your other "what you need" thread to the "Threads of Interest" Sticky for this forum.

Cool, glad to help.

[blt]

Ok i dont want to sound stupid and Ive tried searching but what is "napa"? (75w90 Valvoline Dino Oil (Napa)) Is that an acronym, brand, website?

[005sti]

Napa is an autoparts store that sells valvoline

[JoeH]

Napa Auto Parts Store. they are like an autozone or advanced

oops got beat lol