Hiya, my Z4 with 3.0 M54 engine is approaching 38k and needs an oil change shortly. I have been topping up with Castrol Edge 0w-30 but have no idea what was in there previously - assume whatever the main dealer used at Sytner - Harold Wood.
Now I've found a great deal on mobil 1 0w-40 (11 litres for £60), which is appealing. Has anyone got any thoughts or experiences comparing the two oils - I'm probably being anal but would like to go for the best product
I doubt I will be letting BMW near the car to do the service as I know a friend who runs a MOT station/garage and would trust his work, BMW have continually screwed things up and charged a massive premium for the inconvience of doing so. At least I know he will get it done the way I want it done (and also sort my headlamp alignment out so they work better - BMW messed that up too!).
Has anybody changed their cabin filter themselves or recommend changing any other fluids for a 5 year old car - its just a minor oil service but was wondering if I should get other work done - will still work out cheaper than the main stealer at 'friends rates'.
Now I've found a great deal on mobil 1 0w-40 (11 litres for £60), which is appealing. Has anyone got any thoughts or experiences comparing the two oils - I'm probably being anal but would like to go for the best product

I doubt I will be letting BMW near the car to do the service as I know a friend who runs a MOT station/garage and would trust his work, BMW have continually screwed things up and charged a massive premium for the inconvience of doing so. At least I know he will get it done the way I want it done (and also sort my headlamp alignment out so they work better - BMW messed that up too!).
Has anybody changed their cabin filter themselves or recommend changing any other fluids for a 5 year old car - its just a minor oil service but was wondering if I should get other work done - will still work out cheaper than the main stealer at 'friends rates'.