I own a BMW 840ci for about 4 months now and am very happy with the car. It is quite powerful and has loads of torque with makes driving fun and pleasurable.
I have some question about maintainance.
- How often should I change the engine oil?
- Thinking of changing to K&N filter but not sure if it will work well in dusty conditions. Any ideas?
- How about turbo timers?
Vagunci





