[Deuce Cam]

Originally Posted by severe

ok well you can continue to be uncertain and doubtfull. but every car that hasnt had a dipstick uses this method of filling. same as the rear diff. the fill plug is not at the very top of the transmission, its in the middle, the exact location it needs to be for exact filling when level. if u read before i added 4.5 with my front end in the air, the spec is 4.3 i overfilled by .2 because of the tilt, it isnt gonna make any difference and never has for me before.

for some unknown reason your just guessing and pulling at straws on a car you dont even own that has a different method from your car.

Perhaps, but saying it's done like every other car that doesn't have a dipstick is a generalization not based on fact, so your argument is no better than mine. The only difference is I can admit I'm not certain. Your right, I don't own the car, but the transmission in both of our cars are almost the same.

Maybe the fill hole is in a different place on the 08-09 transmission (you said it's in the middle which doesn't tell me much), so where is it exactly? The gd's is under the ic on the passenger side on top of the transmission - I'd bet the 08-09s' is in the same place.

You say you need to fill until it overflows, or stick you finger in the hole to check the level, but you didn't even use this methed yourself so how do you really know? Again, please post some proof that your method is correct if you're so sure - if you're method is noted in the owner's manual or technical service manual I'll believe you.

So, are you going to try and continue to discredit me because of my uncertainty, or are you going to provide some actual proof to your claims?

Edit: The second post in this thread shows the location of the fill hole on the GD (circled in red). I'm assuming it's the same hole on the 08 considering it's circled in the picture. Is that where you added the transmission fluid?

[severe]

its not noted in the manual, all it says is sti has no method for checking oil level, this is not correct either as the fill plug method is the correct way for checking tranny fluid level. and it does not mean i'm wrong. you jsut seem to have problem with numbers because if you car is level you will fill exactly 4.3 quarts as per specification until **** pours out of the hole. mine was not level but tilted as such i added 4.5 quarts until **** poured out. how difficult is that to comprehend? i didnt need to check the level because i just undid the bolts and drained everything, retightned it refilled 4.5 quarts till **** poured out of the hole, at which point sticking my finger in to see if theres fluid at the bottom of the fill hole is pointless.

again you assume wrong the fill plug is on the side of the transmission not on the top. the image is not correct representation of the gr 08, it is a good image to show what the bolt will generally look like. also the instruction to use a t50 is incorrect because t70 is the correct size, a t50 (i tried a t55 i had) will just spin in place or strip as that bolt is in rather tight from factory.

why do you insist on confusing people who could need real instructions on how to do this on their 08 gr, with pointless **** from what its like on you 06 which clearly doesn't apply to anyone reading this for information on how to do this on an 08. jeez........

[Deuce Cam]

Severe, please understand that my posts aren't an attack on you, and I'm not saying your wrong. I'm saying it's up to you prove that the transmission oil fill process is now different than on past model sti's. You haven't provided anything tangible (ie, real instructions as you put it) to back up your claim, only 'that's how it's done on other cars.' This is the first thread that anyone has mentioned "fill until the fluid comes out" in regards to the sti transmsmission. Are you really suprised that someone questioned it?

If the 08 transmission fill hole truely isn't the one circled in the second post I guess I believe you. Curious, if that's not it then where is it located in relation to that hole? The GR owner's may need to know that location so they have some "real instructions" to go from.

[STI 08]

Originally Posted by severe

ps you need a T70 for the clutch side drain plug on 08 sti. thats the proper size.
not t50

yep, i noticed this too when seeing is the 50 fit when i was under changing the oil.

Originally Posted by leeroix

where do you get the motul oil for tranny and rear dif?

i think the rear dif. actually is supposed to takes different oil than the trans, the trans takes Motul 75w90 GL-5, not sure where to get it though maybe super autobacs or your local shop that sells performance goods. and the rear dif oil get at the dealer, there is a special "STi rear dif oil"

Originally Posted by Scoobie08STi

What's the factory recommended time and mileage to change transmission and diff oil?

i think its something like every 15-20K miles. i saw it in the owners manual somewhere a while ago.


well i emailed subaru and asked if we put in a certain amount, or fill it till it over flows and here what they said back...

Thank you for taking the time to contact us. The information that you are seeking is found on page 12-4 in the owner's manual. The quantity of transmission oil for your 6-speed 2008 WRX STI is 4.3 quarts.
Thank you for the opportunity to be of assistance. If you need any future assistance, please let us know.
Sincerely,
John J. Mergen
Subaru of America, Inc.
Customer/Dealer Services Dept.

[severe]

Originally Posted by STI 08

i think the rear dif. actually is supposed to takes different oil than the trans, the trans takes Motul 75w90 GL-5, not sure where to get it though maybe super autobacs or your local shop that sells performance goods. and the rear dif oil get at the dealer, there is a special "STi rear dif oil"

from everything ive read the rear diff in the 08 is different type, the manual doesnt mention special diff specific oil either just suggests 75w90 for both tranny and diff. ill be filling it with the subaru extra s personally.

not sure what effects using the subaru rear diff oil would have.

[severe]

Originally Posted by Deuce Cam

Severe, please understand that my posts aren't an attack on you, and I'm not saying your wrong. I'm saying it's up to you prove that the transmission oil fill process is now different than on past model sti's. You haven't provided anything tangible (ie, real instructions as you put it) to back up your claim, only 'that's how it's done on other cars.' This is the first thread that anyone has mentioned "fill until the fluid comes out" in regards to the sti transmsmission. Are you really suprised that someone questioned it?

If the 08 transmission fill hole truely isn't the one circled in the second post I guess I believe you. Curious, if that's not it then where is it located in relation to that hole? The GR owner's may need to know that location so they have some "real instructions" to go from.

look i understand its not an attack on me. but you weren't giving appropriate info to people then arguing with me when i had just done this... its kinda silly and somewhat aggravating especially since you haven't dont this yourself on an 08 and are basically arguing for the hell of it... ill skim through the service manual for the gr once i have a quick moment and post a pic form there of the fill plug but if you crawl under the car its blatantly obvious to find the only plug half way up the tranny...

requesting proof is kinda funny though because no one that actually posts any kind of how-to, proof is hardly ever attached of anything its just how that person did a certain job.

[Deuce Cam]

I agree, there's not really a need for me to argue with you, but I thought it was necessary so people have some real info to go on. It would be great if someone could post the technical service manual procedure for the 08 so people will truly know if the process has changed.

How am I not giving appropriate info to people? The first description I gave for changing the transmission oil in this thread wasn't wrong (even if you used the circled plug int the second post for the fill hole); you even said yourself the manual doesn't list a way to check the fluid level. Again, knowone has mentioned there was a different fill hole location on the 08. Hell, there wasn't even a hint that the fill hole location was in a different spot until we started arguing, so this argument may not be so pointless afterall.

I admit that I did base my argument off an assumption - I assumed the fill hole on the 08/09 was in the same place as on past models. But this assumption isn't entirely unfounded because knowone has posted anything to contradict that assumption (until a few mentioned "fill until fluid flows out" in this thread). Even though people did mention the "fill until the fluid flows out" method, it's obvious they also came to that conclusion based on an assumption - all mt cars withough a dipstick 'should' follow the same drain fill rule.

I hope you got your info from the service manual. This whole time you haven't said where you got the info. You only arguments are: you don't even have this car, you aren't good with numbers, your not giving appropriate info, and also criticizing my request for proof. Your just attacking me and doing nothing to support your claims. Why should people believe you if you won't tell us where you sourced the info?

All you've had to do was say, "I found the new fill hole location in the technical service manual for the 08 and the new location is x." It's that simple.

[severe]

^ i didnt, i just unbolted, drained and filled.

to me its really no different than doing a regular oil change. infact id be confused if i had a dipstick... and a fill plug on top of the tranny.

my entire point is that i filled nearly to exact spect using the 'fill till some pours out' method, but overfilled lightly because of the tilt since the front was the only side raised up. its clearly the correct method since if car was level it would be exact to spec.

anyway i found the filler plug on the tranny in the service manual #11:

[Deuce Cam]

Thanks severe! I stand corrected.

[pdivizzle0112]

Originally Posted by severe

^ i didnt, i just unbolted, drained and filled.

to me its really no different than doing a regular oil change. infact id be confused if i had a dipstick... and a fill plug on top of the tranny.

my entire point is that i filled nearly to exact spect using the 'fill till some pours out' method, but overfilled lightly because of the tilt since the front was the only side raised up. its clearly the correct method since if car was level it would be exact to spec.

anyway i found the filler plug on the tranny in the service manual #11:

so all 4.** quarts go into number 11? thats basically all ive been searching around for. all this time i thought you put the fluid in through the top plug which is #2 on the diagram.

instead you fill the tranny from underneath the car?

where do you fill the center diff from?