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Det enda som ahr kunnat idag gå att få skriftligen är detta: "Dear Mr MacDonald Thank you for contacting BMW Customer Information. I have contacted BMW Munich on your behalf and they confirmed to me that Castrol developed this special oil with BMW "M" specifically for these engines. The running characteristics and performance are reliant on this oil being used. Normally engine changes (piston rings) denote new engine model numbers, however this has not happened in this case. Therefore the recommendation would be to continue to use the TWS oil only as instructed. BMW UK also confirmed to me that in March 2000, more oils were tested for the vehicle but they did not have any information on piston rings affecting the oil type required. I am sorry that I have been unable to find any further information on the subject and thank you for your patience whilst I researched this matter on your behalf. Please do not hesitate to contact me if I can be of any further assistance. Yours sincerely BMW Group UK Alex Amos Customer Information Advisor Ellesfield Avenue Bracknell RG12 8TA" Länk | |
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