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Old 01-09-2002, 04:07 PM   #1
hp12c
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Question some advice for Tranny oil change

My WRX has 6k miles. I found that my tranny oil is quite low coming from the factory and would like to do a change and upgrade to Redline.

Just wondering...with 6k miles, is it neccessary to change the tranny filter as well? Also, do I need anything else for this change...(ie: new washer, bolts, filter...etc...) other than the new Redline oil itself.

One more question...would it be wrong for me to change the tranny oil and skip the rear diff?

Thanks
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Old 01-09-2002, 07:41 PM   #2
hp12c
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anyone?
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Old 01-09-2002, 08:14 PM   #3
remarcable
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Since you mentioned a filter, I'm assuming you have an automatic transmission.

You really shouldn't need to change the fluid that early but it could not hurt to switch to a good synthetic ATF. It can be very difficult to get a correct reading on the fluid level sometimes, due to how much fluid gets sucked into the TC. Mine reads constantly low and so I have overfilled it slightly 3 times. You should also be forewarned that the ATF filter costs about $45. If you have the money and wish to switch to synthetic it may be in your best interest to go get a full flush and fill done by the dealer or a reputable transmission shop.

The only factory-weight oil (85w90, right?) I know of for the front diff in synthetic is made by Amsoil. There are plenty of choices for the rear diff though (75w90).

I ended up using Mobil 1 Synthetic 75W90 in the front and rear, however the front diff is making more noise than usual during operation so I'm going to go back to 85w90 dino oil in there.

I currently have B&M trickshift in the tranny. I wanted to go synthetic, but I have some leaks in the ATF pan gasket and I am very afraid that synthetic fluid would squirt right out.
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Old 01-10-2002, 11:30 AM   #4
jamest46
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Default transmission filter

I happen to talk to the dealer this week about the filter and it is a NON servicable part. I guess Subaru put them on there for added protection. I then talked to a local transmission shop......said the same thing. But the trans shop suggested that the fluid be changed out every 20-25,000 instead of 30,000 like the manual says. Personally I am going to change it out once a year as I drive 15-16,000/year. It only takes about 4 quarts and it is drain and fill.......so why not. Just my $.02 worth.

Jim
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Old 01-10-2002, 12:43 PM   #5
remarcable
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There are two filters that I know of. One of them looks like an oil filter and screws onto the pan sideways. There is another filter in the pan that is not servicable without removing the pan.
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Old 01-10-2002, 01:30 PM   #6
hp12c
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hey guys,

Thanks for the responses...
Unfortunately, I made a dumb mistake. I don't know what I was thinking talking about the tanny filter...I acutally I have a MT.

Sorry for the confusion.
My apologies.
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Old 01-10-2002, 08:25 PM   #7
invisibleman
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hey if you're gonna change the tranny fluid have you thoght about bg synchoshift? all my mitsubishi buddies love that stuff i'm planning to put it in mines soon.
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Old 01-11-2002, 12:36 PM   #8
hp12c
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Quote:
Originally posted by invisibleman
hey if you're gonna change the tranny fluid have you thoght about bg synchoshift? all my mitsubishi buddies love that stuff i'm planning to put it in mines soon.
humm...I don't know much about it. Can you please tell me more?
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Old 01-11-2002, 02:01 PM   #9
invisibleman
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for me i haven't got a chance to put it in yet so i can't give you personal information yet. planning to drain it out soon and maybe put it in another guys car this weekend if things go as planned. I'm thinking gino might know more since he prob has dealt with it before i'm gonna ask him after this.
but from what i have heard it's supposed to protect better then our current yet stay fluid. so the cold mornings shouldn't be harder to shift.
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Old 01-11-2002, 03:12 PM   #10
hp12c
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Cool,

I'm going to be at Red Star later on today...I'll see what Gino has to say about this stuff as well.

Thanks
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