Originally Posted by Dreamer99
The service manual recommends 15w40 and changes at 12,000km. I am sure that the BMW engineers spent a fair amount of time testing products and service intervals so I doubt you will go wrong following their recommendations.
I'm sure that they also had to decide between what's best for the car, and what's most convenient for the owner. Many people wouldn't buy a car if they saw it needed service every 3000KM.
I use lubramoly, but i've used mobil 1, amsoil, royal purple, elf4 and others in the past.
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2002 TiAg M3 6mt
deoranged, dechromed, led tails, ZHP knob, UUC SS v3, GROM, OEM 220M 19's, Michelin Supersports
2006 YZF-R6, bunch of go-fast stuff