[Deuce Cam]

You don't want to keep putting oil in until it comes out of the fill, you'll likely overfill the transmission and it would probably take quite a bit more than the recommended 4.7 quarts to do that (it's not like the rear diff or a box on a fwd car). Read your owner's manual to see how much oil you need; then simply put the amount it specifies in the transmission.

[ignacio1983]

I have never change the transmision oil on any of my manual cars... and so far no problems.... my 03 mazdaspeed has 200.000 an no problems.

[severe]

Originally Posted by Deuce Cam

You don't want to keep putting oil in until it comes out of the fill, you'll likely overfill the transmission and it would probably take quite a bit more than the recommended 4.7 quarts to do that (it's not like the rear diff or a box on a fwd car). Read your owner's manual to see how much oil you need; then simply put the amount it specifies in the transmission.

huh? never heard this before, its always fill until you pour out of the fill plug. ill check the manual, otherwise if you have some leak you have no way of knowing how much to put in as you basically eliminate any measure.

on top of this i just did my tranny, with the front end tilted up i put in just around 4.5, recommended was 4.3.

___

i changed mine at 5kish, gotta doo rear diff also. breakin period leaves alot of shavings around. i could see metal trail at the very end of the oil and thats with the magnet plug on. if you shift and drive hard, fast, and have shortshifter theres no reason to not have clean fresh oil in the tranny. plus it keeps your shifts f'in butter smooth if u change the oil in ur mazda speed i bet you see some improvement in shifting even though you dont recognize any poor shifting.

FYI: trucking companies (smart ones) also change their diff oils within first 5k miles, extended the life of the diffs by double.

[severe]

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

[Deuce Cam]

Originally Posted by severe

huh? never heard this before, its always fill until you pour out of the fill plug. ill check the manual, otherwise if you have some leak you have no way of knowing how much to put in as you basically eliminate any measure.

on top of this i just did my tranny, with the front end tilted up i put in just around 4.5, recommended was 4.3.

___

i changed mine at 5kish, gotta doo rear diff also. breakin period leaves alot of shavings around. i could see metal trail at the very end of the oil and thats with the magnet plug on. if you shift and drive hard, fast, and have shortshifter theres no reason to not have clean fresh oil in the tranny. plus it keeps your shifts f'in butter smooth if u change the oil in ur mazda speed i bet you see some improvement in shifting even though you dont recognize any poor shifting.

FYI: trucking companies (smart ones) also change their diff oils within first 5k miles, extended the life of the diffs by double.

The dipstick on 04-07 models goes into the transmission 4-6 inches. When the dipstick indicates the transmission is full, oil is not topped-off in the oil fill hole (not even close). It could be different for the 08/09 transmission, but I doubt it.

I agree that not having a dipstick sucks because you can't check if the oil is low, etc. It's stupid that subaru no longer includes a dipstick, they probably did it to cut costs.

Edit: you mentioned that you just changed the transmission fluid, when you removed the fill hole bolt was the fluid topped off? Was is topped off after you put in the new fluid? That will answer the question.

[severe]

Originally Posted by Deuce Cam

The dipstick on 04-07 models goes into the transmission 4-6 inches. When the dipstick indicates the transmission is full, oil is not topped-off in the oil fill hole (not even close). It could be different for the 08/09 transmission, but I doubt it.

I agree that not having a dipstick sucks because you can't check if the oil is low, etc. It's stupid that subaru no longer includes a dipstick, they probably did it to cut costs.

Edit: you mentioned that you just changed the transmission fluid, when you removed the fill hole bolt was the fluid topped off? Was is topped off after you put in the new fluid? That will answer the question.

i didnt check before draining because theres no point as far as i was concerned, anyway because the car is on tilt it wouldnt be at the hole, it would be a bit below it. i over fill a bit because of the tilt.

but you dont get it. it IS different because of the simple fact that there IS NO dipstick. without a dipstick sticking ur finger into the fill plug is the only way measure if you have enough fluid you cant see inside it to know how much you have or when you should stop filling.

its actually a great foolproof system. hard to mess up "fill until some pours out"

[Deuce Cam]

Are you saying you could feel or tell the oil level by sticking your finger in the fill hole after adding the transmission oil?

Please understand that I'm only trying to help prevent the spread of misinformation. If your sure about the method for checking the transmission fluid level on the 08/09's then please post some hard evidence of this. Again I don't know for certain, but I'm extremely doubtful that "add fluid until some poors out" method is correct, especially considering the fill hole's location.

Keep in mind that the fill hole is at the very top of the transmission - if you put oil in until it overflows it would be completely full of fluid (ie it would leave little or no air in the box).

[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.

[leeroix]

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

[Scoobie08STi]

Originally Posted by GIXY2K

Is there a reason to change the trans. oil so soon?

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