Thread: Disco 3/4 Automatic Transmission FAQ - 6 Speed

Originally Posted by samnt650

Do you know which model year X5 your contact (ZF) was referring to?

Sorry no - is there a difference in the ZF6HP26 gearboxes fitted to the X5.

Both x5 (e53 and e70) are fitted with 6sp. I never saw one with the metal pan and I owned both models in past. I know x3 share the same gearbox and don't know if it had metal or plastic pan

Maybe the same as Landrover - supplied with plastic pans from the factory and later people replace them with the metal product.

I was able to drain & fill the transmission only using the filler plug, and with help of my Mityvac. In all I got apx 3qt of fluid exchanged.

It was real PITA to have the heat shield bracket put back in. Do I really need this piece on the truck? I know the v8 BMW x5 dont have heat shield. That transmission work just fine sandwiched between 2 cats.

Originally Posted by garrycol

Hang on - I have been under the illusion that there was a drain plug in the metal pan and from the recent comments I take that not to be the case.

The pan I bought from ZF Sydney has a drain plug and a label stating only to use BMW oil.

Heat will also dry out the front driveshaft so you may want to keep it if it protects other parts.

This is the part # I got from ZF, for the steel pan WITHOUT drain plug
Steel pan 1068 203 042

I have just returned from a 2000km trip from Sydney to Brisbane towing a 3.5t van and the box developed a shudder in drive at speeds from 60km to 100km but when moved to sport mode it went away. Feels worse with the van off the car.

Have booked it into LR for a service, will be telling them to change the oil, car is at 90,000km and performed faultlessly till now.

Cheers