I’m a strong advocate of regular transmission fluid changes and filter replacement but only if the correct fluid and filters are used. If someone was going to use an inventory-reduction fluid and a pattern-part filter to save money then I’d suggest the transmission would be better off left alone.

A generic ATF may satisfy the viscosity, flash point, anti-foaming, chemical compatibility, oxidation, wear, etc., etc. requirements of the transmission but its friction modifiers are unknown, possibly with entirely different static/dynamic characteristics than the fluid around which the transmission and its control system was originally developed, which may lead to increased/reduced clutch slip. The transmission then has to reset its adaptions to adjust the shift times/clutch energies and there are limits to this. It’s not uncommon to hear of fluid flushes plus adaption resets resulting in a trashed transmission due to the clutches burning out as the control system struggles (unsuccessfully) to adjust.

We all have our own views on Land Rover’s ‘Lifetime Fill’ and ZF’s recommended fluid change intervals for their transmissions but it’s clear that, when this was specified, what wasn’t known were the problems that the ’02 – ’05 models would have with their fluid cooling system and that, as a result, the fluid would often be operating at higher temperatures than originally envisaged. The resulting increase in the rate of oxidation of the fluid massively reduces its life.

Phil

Phil
Thanks for that
I could be overreacting to how my transmission performs
BUT
as I said I think I will go for fluid and filter swap and get the parts and fluid from Dan

Paul

I really wouldn’t worry about the 2-1 rollout clunk on your 6HP26, it’s so common. BMWs and Jaguars suffered from it for years before the 6-speed appeared in the L322.

http://www.thelurch.com/lurching_zf_transmission.htm

http://www.xoutpost.com/bmw-sav-forums/x5-...s-fix.html

The only accepted ‘cure’ seems to be either a fluid change (which you are planning to do, of course) or a software update from Land Rover. I haven’t seen any evidence that it compromises the durability of the transmission at all.

Phil

You can get Lifeguard 6 for a decent price in various places (but please make sure it is Lifeguard 6). My dealer in Rotterdam charged a LOT of money for it until I found it somewhere else, including the original (new) filter/pan and new bolts.

I got this kit but I believe Dan also does a kit for a similar price, better check http://www.lrparts.net/full-automatic-tran...d-oil.html MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

The fluid and filter change is not a full flush, it just changes out the oil which will drain out through the sump plug. I don't personally see the merit in a full flush if you have having reasonably regular changes. personally I would change the box oil every 40-50k but that is because i tow a lot.  There is nothing that can't be fixed with a hammer😜😜
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