Member Profile - Manaz

[dr20t]

Yes I accidentally pressed submit whilst midway through typing.

Above post is the complete one.

Mick

[Manaz]

Yes I accidentally pressed submit whilst midway through typing.

Above post is the complete one.

Mick

No worries.

I'll leave the explanation for how he achieves it to Matt, and will focus on getting the fluid checked and if necessary, replaced.

Do you see anything concerning with the process I was going to follow to flush the fluid myself?

[dr20t]

Your process sounds ok but I would prefer to pump fluid in while the return hose from cooler / filter to the trans is unplugged.

Just make sure you fill the Convertor too.

[alexeiwoody]

If the fluid is indeed burnt - I would be more worried as to why (than whether it holds power or not).

If there is too much friction somewhere to generate enough heat to burn the fluid, it could well mean damaged components inside. Simply doing a flush and a refill without getting a pro to look at the pan, debris and the fluid wouldn't be my first choice. Especially since you're planning to put it right back on the dyno for more power.

Can't remember if you have an ATF cooler on yours Rob? If not, the standard Subaru one that came with the tow-bar optioned libs is nice and long and actually quite good.

[Newbie GT]

Robert you are burning trans fluid as the transmission is simply overheating

Flush - the correct way as Mick has said and filling the torque converter is mandatory as a lot of the time this is missed or people that that don't know what they are doing leave this critical part out. ( drain converter conpletley also ).

A trans cooler should be looked into as Alexi stated..

[owen]

Robert you are burning trans fluid as the transmission is simply overheating

What part of this is simple?

Why is Robert cooking his trans fluid on his daily driver, or do you think this is a normal occurrence on a rare as fuck, stealthy GTB?

[<GB>]

the trans fluid man not have been changed for a long time! that combined with dyno time may have burnt it out. maybe matt pushed it a bit on the dyno with old fluid.

do you have an external transmission cooler?

id like to see how the brake lights are connected to the ecu though what means. id call this bullshit till I see the path mapped out

[Manaz]

Robert you are burning trans fluid as the transmission is simply overheating

Flush - the correct way as Mick has said and filling the torque converter is mandatory as a lot of the time this is missed or people that that don't know what they are doing leave this critical part out. ( drain converter conpletley also ).

A trans cooler should be looked into as Alexi stated..

The fluid is also 100,000km old. It could have burned at any stage during that 100,000km, either at a specific event, or even just as part and parcel of the aging of the fluid (as it ages, it gets worse at doing its job, and thus additional friction can occur within the gearbox. I also don't know how the previous owner treated the car. What we do know is that the stock shifting is slow, and slow changes are actually worse for the gearbox than faster ones (more time with the clutches slipping). Given the car did 80,000km before I got hold of it, on what appears to have been a stock tune, the fluid may already have been bad by that stage (I'm kicking myself for not checking it sooner, to be honest).

My understanding is that flushing it as I've suggested will also ensure that the fluid in the torque converter is flushed out and replaced too, as it's in-path for the flow of fluid through the system). Yes, if you just drop the fluid in the pan, this leaves the fluid sitting in the torque converter.

All that said, I've just had a quote from a Subaru transmission specialist to perform a health check on the transmission and then flush the fluid for $395. Given it'd cost me $200 in fluid alone for a full flush, I think I may just go that route. The local Subaru dealer want $280 ($80 of which they say is fluid - to me, that's worryingly cheap)...

Transmission coolers are funny things. As I understand it, with the stock radiator there's actually a heat-exchanger already present (it's via the lines to/from the heat exchanger that I''d flush the transmission). There's also a very real possibility of over-cooling the fluid (it has an ideal operating temperature range - this is why autos can be a bit clunky when cold, but better once they warm up) - if I do put an additional cooler into the system (it is something I am considering), it will be fitted with a thermostat.

[dr20t]

Who Is going to do the flush?

[shav]

Im assuming you flog your car pretty hard Rob. I guess in your position, making sure the tranny is up to scratch and you have taken all necessary precautions to protect it's longevity, a trans cooler is good added insurance. Where as for someone like me, as a daily driver, who putt putts around the shops and only occasionally gives the car a spirited run, a tranny cooler could be a bit over kill?

[Manaz]

Who Is going to do the flush?

These guys were recommended to me. They seemed to ask the right questions, based on the right understanding - they know it's the later version of the Jatco 5speed box, they use Castrol full synthetic fluid (http://www.castrol.com/en_au/australia/ ... hicle.html), but I can supply my own if I wish.

http://www.subarugearbox.com.au/

Happy to receive alternative recommendations. Nothing is locked in yet.

[Newbie GT]

Im assuming you flog your car pretty hard Rob. I guess in your position, making sure the tranny is up to scratch and you have taken all necessary precautions to protect it's longevity, a trans cooler is good added insurance. Where as for someone like me, as a daily driver, who putt putts around the shops and only occasionally gives the car a spirited run, a tranny cooler could be a bit over kill?

As Shav said I feel also you give it a hiding.. And it's an auto

I'm sure if you flush correctly replenish with new high end fluid you will be fine.

After 100 thou Kms with old fluid this would be a high contributor

[Manaz]

Im assuming you flog your car pretty hard Rob. I guess in your position, making sure the tranny is up to scratch and you have taken all necessary precautions to protect it's longevity, a trans cooler is good added insurance. Where as for someone like me, as a daily driver, who putt putts around the shops and only occasionally gives the car a spirited run, a tranny cooler could be a bit over kill?

It's daily driven, often in Sydney traffic (which isn't the best conditions for a transmission, this I understand). About 50% of the time it's driven, it has my kids and/or wife in it - so it's definitely not flogged.

As Shav said I feel also you give it a hiding.. And it's an auto

Your feelings are irrelevant. And thanks Captain Obvious, yes, it's an auto. I wonder if you even understand the difference in how an automatic works vs a manual (and I don't mean how you operate it, but how it differs mechanically internally)...

I'm sure if you flush correctly replenish with new high end fluid you will be fine.

After 100 thou Kms with old fluid this would be a high contributor

I'm sure I don't give a shit about your opinion (which has, amazingly, changed as things have gone on, to maintain alignment with popular consensus) given you have no possible way of telling whether my transmission will be fine or not.

You're so full of bullshit that it's leaking out your ears. And to think I defended you early on (and alienated myself from people who know better than most on here in doing so. Sorry Tony).

[shav]

Im assuming you flog your car pretty hard Rob. I guess in your position, making sure the tranny is up to scratch and you have taken all necessary precautions to protect it's longevity, a trans cooler is good added insurance. Where as for someone like me, as a daily driver, who putt putts around the shops and only occasionally gives the car a spirited run, a tranny cooler could be a bit over kill?

It's daily driven, often in Sydney traffic (which isn't the best conditions for a transmission, this I understand). About 50% of the time it's driven, it has my kids and/or wife in it - so it's definitely not flogged.

Ah fair enough mate, I wasn't sure, hence the assumption. Yeah peak hour traffic isn't good. I don't drive in peak hour anymore since working from home, so for me a tranny cooler would still be overkill not only due to the change in circumstances but also with the type of driving I frequent. I've only driven in Sydney traffic once, and never again. haha. I have never been so stressed on the roads before till then. haha

[dr20t]

Who Is going to do the flush?

These guys were recommended to me. They seemed to ask the right questions, based on the right understanding - they know it's the later version of the Jatco 5speed box, they use Castrol full synthetic fluid (http://www.castrol.com/en_au/australia/ ... hicle.html), but I can supply my own if I wish.

http://www.subarugearbox.com.au/

Happy to receive alternative recommendations. Nothing is locked in yet.

Msg sent

Mick