Oil for M Roadster

[Keifer]

I've just been charged £106 for 6 litres of oild by a BMW dealer during a service.
Invoice says Castrol RS, Service Dept say Castrol TWS - I can find the former at around £27 for 4 litres and can find no oil by Castrol called TWS
Anyone had a similar experience or able to shed any light on whta this TWS oil is?

Many thanks

[Keifer]

Thanks for that
Spoke to Castrol
BMW only recommend the TWS motorsport oil - which is not available to retail purchasers
The helpful people at Castrol sales confirmed that they sell it to BMW at £21.64 for 4ltrs and £5.61 for 1ltr so BMW garages are making approx 200% profit on the oil.
That is simply unacceptable.
I shall be taking up the matter with this dealership and hope i need not take it any further.
Other discrepancies included a supposed "internal invoicing" for work done under the warranty, with no external confirmation of the cost or indeed that the work was ever done - having every significant receipt for the car in the past I have insisted upon a copy but the reluctance to give this was simply staggering.
Is this the way a dealership for a major manufaturer should behave?