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Old 28-03-2021, 11:30 AM   #1
ToyotaCorolla
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Default Which oil is leaking here?

What oil is leaking here? transmission? power steering? rear diff?

https://imgur.com/rUKDCFA.jpg
https://imgur.com/ykuJLd3.jpg
https://imgur.com/v7Igtk0.jpg

How do I fix it? replace that plastic bit?
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Old 28-03-2021, 12:16 PM   #2
falconhell74
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Default Re: Which oil is leaking here?

Transmission extension housing seal - were the tail shaft goes in
I would also service the trans as that oil is burnt it should be red.
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Old 28-03-2021, 12:36 PM   #3
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Default Re: Which oil is leaking here?

Quote:
Originally Posted by falconhell74 View Post
Transmission extension housing seal - were the tail shaft goes in
I would also service the trans as that oil is burnt it should be red.
I just serviced the damn fluid like 4 months ago. Granted the fluid has never ever been changed before that :(

Maybe another top up?
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Old 28-03-2021, 01:36 PM   #4
falconhell74
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Default Re: Which oil is leaking here?

When you drop the pan and oil there is still about 2 liters in the torque converter .
If it was really dark brown or black this will mix with the new oil changing the color.
Your call but I would replace the extension housing seal drop the oil again and also put some LUKAS stop slips in it, it helps rejuvenate the seals and coates the bands and clutch packs thus helping to extend the life of the trans.
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XC GS OLD SCHOOL MUSCLE

Audi A4 S-line quttro
Xc falcon
Previous fords-
xc falcon 500 ,250 x flow 3 speed
xc gs worked 250 x flow 4 speed
xa Fairmont 302 auto wagon
xb falcon 250 log auto 4 door
xb falcon 200 log auto ute
xc gs project - had to sell :-(
xc gs 302 4 speed 4 door
xc gs 351 auto 4 door
zf fairlane 302 auto
zk fairlane 250 x flow carb auto
zl fairlane 250 x flow EFI auto
xg ute , BA falcon dedicated gas
xd, xf x 3 ,ea,eb,ef,au x 3,telstar tx5
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Old 28-03-2021, 01:40 PM   #5
aussiblue
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Default Re: Which oil is leaking here?

Before you go further just check the valve cover gasket or the head gasket near the firewall isn't leaking. They sometimes leak their in that hidden spot between the head and the firewall and drip down onto the transmission.
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Old 28-03-2021, 01:51 PM   #6
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Default Re: Which oil is leaking here?

You can replace the extension housing seal, but it will leak again within 2000k's, take the extension housing off and replace the bush and the seal at the same time, the bush flogs out and then the seal goes, so just replacing the seal is just a band aid fix, the tailshaft flaps around in the extension housing flogging the seal out again.

Just make sure you align the hole so it lubricates, there is a special tool for fitting these, you might have to get a transmission shop to fit the bush, just take them the housing and the bush.

https://www.ebay.com.au/itm/REAR-EXT...gAAOSw8btgR6Xe
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Old 28-03-2021, 02:46 PM   #7
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Default Re: Which oil is leaking here?

Quote:
Originally Posted by aussiblue View Post
Before you go further just check the valve cover gasket or the head gasket near the firewall isn't leaking. They sometimes leak their in that hidden spot between the head and the firewall and drip down onto the transmission.
You mean the engine oil leaks from there?

Quote:
Originally Posted by falconhell74 View Post
When you drop the pan and oil there is still about 2 liters in the torque converter .
If it was really dark brown or black this will mix with the new oil changing the color.
Your call but I would replace the extension housing seal drop the oil again and also put some LUKAS stop slips in it, it helps rejuvenate the seals and coates the bands and clutch packs thus helping to extend the life of the trans.

I bought the car second hand, and when I drop the pan to change the oil at 300k, the filter still said "made in USA" for ford. I guess it has never ever been change.

TQ 95 is bright red, I guess it's really dirty, that's why it has turned yellowish back?
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Old 28-03-2021, 08:10 PM   #8
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Default Re: Which oil is leaking here?

Quote:
Originally Posted by prktkljokr View Post
You can replace the extension housing seal, but it will leak again within 2000k's, take the extension housing off and replace the bush and the seal at the same time, the bush flogs out and then the seal goes, so just replacing the seal is just a band aid fix, the tailshaft flaps around in the extension housing flogging the seal out again.

Just make sure you align the hole so it lubricates, there is a special tool for fitting these, you might have to get a transmission shop to fit the bush, just take them the housing and the bush.

https://www.ebay.com.au/itm/REAR-EXT...gAAOSw8btgR6Xe
Good advice yes !!!!
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Old 29-03-2021, 10:51 AM   #9
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Default Re: Which oil is leaking here?

https://www.autolinkparts.com.au/4-s...sion-housing-s

Is it this part to replace the seal?
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Old 29-03-2021, 10:57 AM   #10
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Default Re: Which oil is leaking here?

Early type seal, but will do the job fine
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Old 29-03-2021, 11:36 AM   #11
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Default Re: Which oil is leaking here?

Quote:
You mean the engine oil leaks from there?
Yes; engine oil can leak from a leaking valve cover gasket near the firewall down onto the trans extension housing. In you case it is probably ATF from the transmission but nonetheless, just in case it's not, it's worth first checking for oil leaks between the back of the valve cover and head near the firewall before starting work on the transmission or extension housing seal. it's just a matter of wiping your hand around there or checking with an inspection mirror to see there are engine oil leaks there. Or if you aren't concerned about the associated health risks, do a taste test of the leaking fluid to see if it tastes like ATF or engine oil.
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Last edited by aussiblue; 29-03-2021 at 11:42 AM.
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Old 11-05-2021, 07:16 PM   #12
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Default Re: Which oil is leaking here?

There seems to be a huge price difference for the power steering pump between wreckers ($60) and autoshops ($180)....

There autoshops says they 'renew' it? Are they full of ****?
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