@Mike. I'm afraid we don't know what car, year, platform you have - so difficult to fully give you guidance (I've done a LOT on the E53, so I can endorse Ricky-Bobby's note). Home many miles / km on your car?

Suggestion for all posters - put your model & key options in your signature line - makes it MUCH easier for all of us to help each others.

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2002 Euro X5 (E53) 3.0 diesel (M57)
5 speed manual with UUC short shifter.
Pre-xDrive NV125 transfer case (chain & gears).
Factory Xenon headlights, Spyder LED tail lights
Updated vortex crankcase breather.
Motorsport dead pedal, factory fire extinguisher, factory first aid kit, factory F&R mud flaps, factory PDC

Bilstein B6 shocks F&R
Redline oil has replaced "lifetime" fluids (F&R diff, manual transmission, transfer case and P/S).
Dimple magnetic drain plugs in all compartments.