The gearbox fault where there is insufficient pressure for clutch E is due to ZF fitting white-metal stator bushes instead of the previous bronze bushes in all 6-speed gearboxes made from early 2008 until finally reverting to bronze bushes around 2012. The problem seems to be avoided with frequent oil changes, presumably to remove the fine metal particles before their concentration gets too high. Changing the oil late appears to make the problem much worse, causing the gearbox to fault on even very light throttle, as occurred with my 2010 3.0 D4.
MY12 RRV 4.4 TDV8 AB, +LLAMS, +e-diff, +ACC stop/go. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi
Bookmarks