D4 8 speed gearbox question - slipping

**ATH** · 3rd December 2018, 07:20 PM

I intend having mine done at 60K or maybe even doing it myself. Spoke to the service bloke at the stealers today and he reckoned the "filled for life" by LR is not recommended by the experts they use to do the fluid changes.
No doubt they stick a bit on top for driving it to and from the people they use....

AlanH.

**Arapiles** · 3rd December 2018, 08:39 PM

Thanks all, I'm going to keep an eye on it for the next week or so and see how it goes.

**DiscoJeffster** · 3rd December 2018, 11:51 PM

The steel pan is less of a concern in reality. The value is in simply changing the oil at 1/3 interval preferably.

**ATH** · 4th December 2018, 07:37 PM

If the sump is protected by the plastic covers underneath there really shouldn't be a problem with possible damage from stones etc. But this reminds me of having the sump holed on a Toro bogger underground on a mine I worked at. Myself and the other fitter went down to rescue it, I got the short straw and had to go underneath in the water it was stuck in to hold up a plank and loads of clothes on the sump where it was holed, he fed the band-it strap down and tightened it up the top to hold the bodge in place when we drove it out.
Then we found something had failed on the throttle so I sat on top holding the throttle wide open and he drove it topside to the workshop. Wild ride that one.

I don't think a steel sump is available yet for the D4 anyway.
AlanH.

**Eric SDV6SE** · 5th December 2018, 11:20 PM

Originally Posted by DiscoJeffster

The steel pan is less of a concern in reality. The value is in simply changing the oil at 1/3 interval preferably.

AT fluid is cheap, 6 or 8 speed ZF transmissions are not. Full fluid change and flush every ~50,000kms, and a valve body kit at 150,000km or so seems like good proactive maintenance to me, considering the work these units do. Steel pan is a good option as the filter is separate (Integral with the plastic pan), so you’d have to wait until a steel pan is available for the 8spd before doing a flush and fluid change. Check BMW sites, they use the same ZF transmissions. (My 6spd has a steel pan with a BMW part number on it).

Need to to check 100% compatibility, but this could be suitable: BMW X1 X3 X4 ZF 8 Speed Automatic Transmission GA8HP45 Oil Pan with Filter | eBay

cheers,

Eric

Thread: D4 8 speed gearbox question - slipping

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