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Old 01-12-2010, 11:04 AM   #1
enjoiwrx
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Default Want to change Trans. Fluid & Diff. fluid what should i use?

Hello all!! I have a 2005 WRX 2.5L Hybrid, 3inch Invidia bellmouth DP, SPT Catback, Invidia uppipe. Tuned by DPS.

Want to change those fluids and i have some AmsOil Severe Gear (synthetic extreme pressude lubricant)75w90 that a shop recommended i use on my car. I would think this is ok for the diff. but for 5spd manny trans do i use the same thing? Want to know if this is ok or what else should i use to do these services. Thank you!

P.S. its says formulated for severe duty applications...
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Old 01-12-2010, 12:36 PM   #2
BumbleBeeTuna
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I just swapped my trans fluid to Subaru Extra S and love it!! Shifts so smooth, I had Redline in it before and had problems going into first, now shifts in like butter.

Diff will take that 75w90 AmsOil youve got just fine. I just run Regular cheap 75W90 in my diff with no problems so far.
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Old 01-12-2010, 01:02 PM   #3
thrasher
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+1 for Extra S
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Old 01-12-2010, 01:27 PM   #4
crash60068
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i did my tranny and went Lucas. Lucas all the way. not sure on the diff but i dont think it will make a difference what you use
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Old 01-12-2010, 02:58 PM   #5
09rexwagon
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You can put Colavita Extra Virgin Olive oil into your rear diff and it'd work fine . But use good stuff for the tranny....Extra S or Motul 300.
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Old 01-12-2010, 08:36 PM   #6
sonic03rex
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Yeah don't use anything in the rear(STI) other than Subaru LSD fluid.. I learned the hard way..
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Old 01-12-2010, 09:17 PM   #7
jetski247
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how often should you change your drivetrain fluids
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Old 01-12-2010, 09:31 PM   #8
bluesubie
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Quote:
Originally Posted by enjoiwrx View Post
Hello all!! I have a 2005 WRX 2.5L Hybrid, 3inch Invidia bellmouth DP, SPT Catback, Invidia uppipe. Tuned by DPS.

Want to change those fluids and i have some AmsOil Severe Gear (synthetic extreme pressude lubricant)75w90 that a shop recommended i use on my car. I would think this is ok for the diff. but for 5spd manny trans do i use the same thing? Want to know if this is ok or what else should i use to do these services. Thank you!

P.S. its says formulated for severe duty applications...
I liked the Amsoil Severe Gear 75W-90 for the first 20k miles and then it started to grind. This was actually the first time I had grinding from a synthetic gear oil (driving manual subes since 97). Some folks are satisfied with it. I switched to Extra-S and I'm very happy with it.

Congrats on the 14th gear oil post for the week.

Quote:
Originally Posted by jetski247 View Post
how often should you change your drivetrain fluids
As often as the manual says.

-Dennis
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Old 01-13-2010, 11:22 AM   #9
WRXSleeper
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I prefer oils I can buy locally.

I just changed my tranny & diff fluid this weekend.

This will be my second change running 1 qt 75w-90 valvoline synpower and the rest 75w-90 valvoline dino oil in the tranny. This seems to work a little better in the cold which is what I wanted. It is still tough to downshift into second when cold, but the gearbox doesn't feel like sludge on a cold morning.

I use M1 75w-90 in the rear diff. Definetly use a syn oil in the rear diff.

If Extra-S was sold in qts at a reasonable price I would try it.
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Old 01-13-2010, 11:54 AM   #10
09rexwagon
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Quote:
Originally Posted by WRXSleeper View Post
I prefer oils I can buy locally.

I just changed my tranny & diff fluid this weekend.

This will be my second change running 1 qt 75w-90 valvoline synpower and the rest 75w-90 valvoline dino oil in the tranny. This seems to work a little better in the cold which is what I wanted. It is still tough to downshift into second when cold, but the gearbox doesn't feel like sludge on a cold morning.

I use M1 75w-90 in the rear diff. Definetly use a syn oil in the rear diff.

If Extra-S was sold in qts at a reasonable price I would try it.
No need to use synthetic in a R160....anything with an inkling of lubricity will work in that rear diff .

You can get a 20L bucket of Extra S shipped from Chaplins for a cost per unit quart of about $8/qt.
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Old 01-13-2010, 12:15 PM   #11
thrasher
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Quote:
Originally Posted by 09rexwagon View Post
You can get a 20L bucket of Extra S shipped from Chaplins for a cost per unit quart of about $8/qt.
Yeah, the best thing to do is find one or two other locals who need Extra S too, have one person order it, and then divide it up and split the cost. Or if you change it every 15K and you rack up miles quickly, just hang onto it. I chose to sell my extra because it takes me 5 years to drive 15K miles.
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Old 01-13-2010, 08:59 PM   #12
bluesubie
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Quote:
Originally Posted by thrasher View Post
Yeah, the best thing to do is find one or two other locals who need Extra S too, have one person order it, and then divide it up and split the cost.
Or, if you're lazy like me just order it from Fred Beans parts.com .

-Dennis
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Old 01-14-2010, 09:22 AM   #13
gundamwrx
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I am using Motul in my trans and rear diff. for my 03 wrx. It works well, but it is a bit pricey.

Extra S should be fine, too. It is OEM after all.
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Old 01-27-2010, 02:58 PM   #14
meccjoo
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+1 for extra s in tranny and diff
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Old 01-27-2010, 03:14 PM   #15
Boxer_Boy
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What should I use in my 07 sti rear? I think its a R180???
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Old 01-27-2010, 03:48 PM   #16
steverx05
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Quote:
Originally Posted by sonic03rex View Post
Yeah don't use anything in the rear(STI) other than Subaru LSD fluid.. I learned the hard way..
I hope you're not using LSD fluid in your 08's rear diff.
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Old 08-18-2010, 04:07 PM   #17
AeroWRX
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Quote:
Originally Posted by bluesubie View Post
Or, if you're lazy like me just order it from Fred Beans parts.com .

-Dennis

Just noticed the site change, does Fred Beans not sell Subaru Extra S oil anymore?
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