Yes, another oil thread 
I was talking oil with a member of staff at a main dealer this morning. I learned that if you take your oilhead (1100, 1150 or 1200) in to a main dealer now for a service they will fill it with 3.75 litres of 10W50 fully synthetic oil (Castrol Power 1) because that's what B*W tell them to use. This will cost you.....wait for it.....£60 for the oil alone.
However, you can request that they use 20W50 mineral in which case they'll use 'B*W Power' 20W50 which is in fact Castrol Actevo. Bizarrely, it's cheaper to buy this BMW-branded than it is Castrol-branded, although my dealer keeps both
For your 3.75 litres at service time you'll be charged £20. I paid £18 for 4 litres as I needed oil today and couldn't get it elsewhere locally.
So for those who go to a dealer for servicing it's worth asking about oil and saving yourself £40 in the process.
The guy reeled off the list of oils that B*W have recommended over the years since the oilheads were introduced - apparently Castrol GTX was in there as well as GP, GPS, then Actevo and now Power 1, but I've missed out a few I didn't remember. £60 worth of oil for a clunky old oilhead? No thanks - a 12k mile service costs me less than that all in.
Why does an engine that needed a normal mineral oil when it was new now need fully synthetic? Discuss.....

I was talking oil with a member of staff at a main dealer this morning. I learned that if you take your oilhead (1100, 1150 or 1200) in to a main dealer now for a service they will fill it with 3.75 litres of 10W50 fully synthetic oil (Castrol Power 1) because that's what B*W tell them to use. This will cost you.....wait for it.....£60 for the oil alone.
However, you can request that they use 20W50 mineral in which case they'll use 'B*W Power' 20W50 which is in fact Castrol Actevo. Bizarrely, it's cheaper to buy this BMW-branded than it is Castrol-branded, although my dealer keeps both
For your 3.75 litres at service time you'll be charged £20. I paid £18 for 4 litres as I needed oil today and couldn't get it elsewhere locally.So for those who go to a dealer for servicing it's worth asking about oil and saving yourself £40 in the process.
The guy reeled off the list of oils that B*W have recommended over the years since the oilheads were introduced - apparently Castrol GTX was in there as well as GP, GPS, then Actevo and now Power 1, but I've missed out a few I didn't remember. £60 worth of oil for a clunky old oilhead? No thanks - a 12k mile service costs me less than that all in.
Why does an engine that needed a normal mineral oil when it was new now need fully synthetic? Discuss.....
might require a 100-200K experiment though