Zymol Stryk (or however it is spelled) works well too.
Mothers is likely more easily available so I'll try that when I run out of the Zymol stuff.
'11 E90 M3, Mebourne/Black/Fox Red/Black, 6MT, roof, PP2, heated seats, moonroof, split folding rear seats, iPod/USB adapter, Technic harness, JL XD 6/600.
'02 E46M3, Imola/Black, 6MT, CWP, no sunroof, Ohlins, Eibachs, PFC DD rotors, PFC pads! HAT Clarus/Legatia speakers, 2 big amps in the back.
'05 X5 4.4i, Imola/Black, Premium, Cold, HAT Imagine 6.5's, Intravee iPod adapter