Originally Posted by Cherokee30D (Post 1629476)

Not sure whether this is old news or not, however my mechanic has informed me that Penrite are about to release a transmission oil to suit our Grand Cherokees.
Same spec as original apparently.

Cheers, Craig

Originally Posted by Buffomarinus (Post 1629492)

Is this for the ZF 8 speed transmission or the earlier W5A580 5 speed fitted to the earlier WK2s?

Originally Posted by chocco (Post 1631273)

Ryco also now make a trans pan for the ZF 8 speed.
https://uploads.tapatalk-cdn.com/201...1ad6b5c0e5.jpg


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Originally Posted by chocco (Post 1631605)

Bought a pan from super cheap and going with amsoil oil or redline not sure yet.




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Originally Posted by Markus (Post 1631686)

Looking at the Ryco website it says that the Jeep WK is not compatible with this pan/filter?

Originally Posted by Troutman (Post 1631792)

So what is the consensus on the service interval for the ZF box?

Originally Posted by bjm (Post 1632504)

Just remember heat is the killer of ATF ,not necessarily klms travelled. Most good auto trans shops will say if you are towing change the fluid every 30-40000 klms. An ATF change is a lot cheaper than a 6-8spd ZF box overhaul !! Just draining the transmission once will not replace all the old fluid. Drain/refill twice run trans between fills.

Originally Posted by chocco (Post 1632465)

Hi Folks,

I ended up doing a rear LH bearing so it had to go to the workshop so I got the trans pan swapped and Penrite oil put in as well at the same time.

I would not recommend the the Ryco trans pan as it only has 2 magnets and the ones you can get on EBay from Germany have 4 sets of magnets and they are the same price.

It’s is shifting a lot better is that because it’s new oil or because it’s Penrite, who knows.

I can say that I had the work done at Poly 4x4 in Huntingdale and I will be back for its service/coolant flush I was most impressed.

Originally Posted by Kenny72 (Post 1642642)

Hello GCDingo, Reference to your 2015 running out of warranty, Doesn't your Jeep now have the extra 2 years as stated by FCA at the start of 2017 ( I think is when it started ) I have 2017 reg. model with the 5 years warranty so would expect your 2015 will be covered until 2020.
Regards
Kenny

Originally Posted by GCDingo (Post 1642616)

Sorry to bring up an oldish thread but got a couple of questions. My 2015 is out of warranty at the end of the year, done 43k km. Have had a random issue with the gearbox when pulling up to a stop, seems like the torque converter won't disengage and the car shakes. Basically like it is stuck in 1st or when you don't depress the clutch in manual when coming to a stop.



Replicating it is as usual is difficult and I have tried many times. So I was going to get a mechanic to do the last service before I can start doing it once out of warranty and thought maybe as a precaution might change the oil pan and oil while he is at it. For those that have done it is the german one Chocco posted the best to get? Price seems ok being it comes with oil too.



https://www.ebay.com.au/itm/ZF-8HP70...EAAOSw42dZCDci

Originally Posted by Kenny72 (Post 1642642)

Hello GCDingo, Reference to your 2015 running out of warranty, Doesn't your Jeep now have the extra 2 years as stated by FCA at the start of 2017 ( I think is when it started ) I have 2017 reg. model with the 5 years warranty so would expect your 2015 will be covered until 2020.
Regards
Kenny

Originally Posted by chocco (Post 1642743)

Hey Dingo long time,

So everyone I replaced my oil and trans pan, all I can say is due to legal reasons I would be going with the German one with the 4 magnets.

Now as for the Penrite Trans Oil, I’m not a fan at cold temps, once it’s warmed up and reached operating temp of 93deg then it seems okay and no issues transitioning thru the gears.

When it’s cold gear changes are a little grabby and not as smooth as with the Lifeguard.

I will swap back but not at the moment, I am looking at installing a secondary filter so will probably do that at the same time.

Cheers




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Originally Posted by rickstevo (Post 1643521)

Just read all the posts here and am contemplating changing my pan and transmission fluid but how do you get all the fluid out….. besides using the drain plug. eg: torque converter. Ta fellas.

Originally Posted by GCDingo (Post 1643541)

Two ways but hard by yourself and time consuming. Remove gearbox completely to get to torque converter and empty and replace fluid. Otherwise transmission shops do via a pump through the transmission cooler lines. I think the pan takes about 2 litres so just changing the pan only is just diluting it. But maybe 2-3 oil changes (pan only) over 10k km or something might be suffice with reusing the pan?