AYC Diff

[Jimbo]

I wonder if they have just changed the AYC Hydraulic fluid and not the clutch pack fluid - it's the clutch pack fluid that gets contaminated...

Hi Kieran - are these two things different then? The way Mitsy explained it was that there are two places that require the gear oil to be changed in the diff, and then the 3rd place was for the AYC hydraulic fluid. Is there a 2nd seperate point that requires more AYC fluid, i.e to do the "clutchpack" fluid?

[Rally205]

Hi Don - I received 10 ltrs of ATF from you on Tuesday (and at warp speed too, I might add ) all ready for my gearbox flush.

Isn't the AYC fluid a different type of oil altogether though?

The AYC fluid is the same as the Amsoil ATF which is Mitsubishi spec SP3 or whatever.

The problem when I fitted the new diff was that Variava Mitsubishi used normal Dexron III to fill it. I found out and took it to another dealer who flushed it out and re-filled it with the pukka stuff. It had already contaminated the clutch plates though so it took a further 2-3 changes of fluid with a bit of driving in between each change to cure the problem.

[Jimbo]

Thanks Marcus and everyone else for all the valuable information - armed with all this info I'll see what Mitsy make of it - I might even take my Amsoil and ask them to fill it with that, it doesn't need much does it? Want to make sure I've got at least 9.5 ltrs for gearbox flush.

[BraindG]

Hmm, keep us posted, im trying to remember what oil i put in mine last? - this sounds like a solution...

[Nick Mann]

Hi Kieran - are these two things different then? The way Mitsy explained it was that there are two places that require the gear oil to be changed in the diff, and then the 3rd place was for the AYC hydraulic fluid. Is there a 2nd seperate point that requires more AYC fluid, i.e to do the "clutchpack" fluid?

This post scares me! Hopefully it is just crossed wires.

Hydraulic = ATF, reservoir in the boot.
Diff = gear oil, drain and fill on rear diff.
Clutch = ATF, drain and fill on rear diff.

So: 3 areas for oil, 2 of which are on the rear diff. BUT ONLY ONE PLACE FOR GEAR OIL!! If they are putting gear oil in the clutch system, then we may have found the problem!!

[Jimbo]

If they are putting gear oil in the clutch system, then we may have found the problem!!

No I doubt it Nick, it must be me getting my wires crossed - it was last summer when I had that particular conversation with the Ralliart mechanic and I've killed an awful lot of braincells since then.

Thanks for the clear explanation though, now I totally understand what goes where

[BraindG]

You had any joy with this yet? - I noticed my AYC light came on on the drive home from Plymouth lastnight.. might be linked..

[Jimbo]

No, nothing, nada

Mitsy are getting on my t!ts, they won't help me make a decision on it, they just keep churning out useless suggestions, and my warranty won't touch it with a bargepole.

At the moment my strategy is to follow Marcus' advice and get the clutchpack fluid changed asap....then I'm going to run it for 200-500 miles or so and get it changed again. Hopefully the first change will cure it.....but I've stressed to Mitsy that they need to properly flush and refill it. I'll know more next week when it's changed.

By the way, does yours sound REALLY loud as well? I understand exactly what Marcus means, but it still surprises me just how loud the noise can be at times......

[Jimbo]

RESULT!!!!!

WRD, Marcus, and Amsoil to the rescue

We changed the AYC clutch actuator fluid this afternoon and filled with fully synthetic ATF. Instant result - no more grinding and graunching noises!!

Although I was hopeful, I never in a million years thought it would be an instant remedy. Big big thanks everyone, Top- !

[amsoil]

Been said already but worth saying again ....

RESULT!

[Jimbo]

Been thinking more about this....I'm going to ring my dealership tomorrow and ask them what oil they use for the AYC clutchpack. I remember when I was there in the workshop with them last summer (repairing a burst power steering pipe) I noticed they had a big drum of somewhat standard looking ATF they used to re-fill my power steering.

I just wonder whether this stuff is Dextron III and whether they filled the diff with it? Although I'm so happy that all you guys in CVR4 have solved the problem for me in the space of 3 weeks, I'm actually feeling really quite p***ed off that Mitsubishi couldn't even identify the problem (let alone cure it) in the space of 9 months and (alledgedly / documented) two complete sets of oil changes to all three areas on the diff. They must get a whole bunch of EVO's go there for servicing as well, so it's not as if an AYC diff is alien to them??? I feel like throwing something big and heavy at them.

[Jimbo]

Been said already but worth saying again ....

RESULT!

Don, your oil is magnificent, truly magnificent. If you ever need one of those cheesy "James from Stoke-on-Trent says Amsoil...." quotes, you'll get me front and centre and my best wooden-acting!

[richy rich]

james didnt you mean WRDamsoil and marcus

sorry mate.

im so glad this issue is solved for you

thank you for supporting us.


come on cvr4 (more work pls)

the drain on the clutchpack was so tight i needed a 3ft breaker bar to undo it.

don't think it has been touched in years.

[amsoil]

Well I'll say it then for my honoury membership

WRD Rocks

[richy rich]

thanks don amsoil rocks just as much

[Kieran]

Glad you got it sorted Jimbo. I can see more than ever why Amsoil has so many affiliate sites and so many people raving about it. Just as an aside, I've done nearly 1000 miles since the Amsoil went in Ariadne. The engine dipstick looks as fresh as the day it went in. Impressive, considering that several 'fully synthetic' brews were dark brown/black after only 3000 miles....

Richy..... Had a go at the AYC Hydraulic fluid yet? I think I need to change mine (noisy pump and it's starting to discolour) but I'm still being a chicken!!

[richy rich]

Richy..... Had a go at the AYC Hydraulic fluid yet? I think I need to change mine (noisy pump and it's starting to discolour) but I'm still being a chicken!!

not yet k but will do.

the biggest prob is having the car up in air to do it

[amsoil]

And now we have in stock a super brake etc hydraulic fluid. Made in Germany; we stock it because it possesses what we think is the best compromise in all areas ie quite high boiling point and without the aggressive corrosiveness of the pure race brake fluids, slow to take up moisture and good for 3 years! The bonus is that the price is good. (we have just done a deal and the price will be coming down to £16 for a litre when my computer lady can update the web site.
Check it out here :- http://www.performanceoilsltd.co.uk/brake_fluid.html

The usual Club Members discounts apply. So theres even more reason to become a VR4 Full Member.

[Josh2xsv]

Any NZ equivalents to this GOD-SENT AMSOIL???
I am really keen to get something that will do the job excellently for my next OIL/ATF/AYC changes - and they are pressing!

Any thoughts would be great!

[amsoil]

Any NZ equivalents to this GOD-SENT AMSOIL???
I am really keen to get something that will do the job excellently for my next OIL/ATF/AYC changes - and they are pressing!

Any thoughts would be great!

Checked up and 'If you are in New Zealand and would like to order AMSOIL products, please call 64-9-827-8442.'
I have no idea if thats a NZ phone number or what. If you have problems let me know. Also founf this one :-

Auckland, NZ
AMSOIL Distribution Centre
3/1 Binsted Rd.
New Lynn
Auckland, NZ
Mailing Address:
P.O. Box 15813
New Lynn
Auckland, New Zealand, 1232 Please call in advance to verify operating hours, inventories and shipping arrangements. 9-827-8442
FAX: 9-827-8802
bonnie@AMSOIL.co.nz

Regards Don