Another good product is Novus plastic cleaner and polish (use #2). It's even certified by Cessna & Boeing to do the same on aircraft windows. Very reasonable and it works. I've saved many headlights (and tail lights) over the years with this product. Also handing on flatscreen TV & PC screens.

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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.