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So my "friend" decided to go with 300v Trophy 0w40, the same Oil that is highly recommend for GTR, and any high performance sport car
He got X5 for which he get rid of bmw warranty from the first day as this oil is not LL approved and he wanted to keep the car for very time period, so he started to fill it from his first service, and after 150k miles not a single problem he had with it engine or turbo.
It costs twice more than any regular oil, and it's recommended to be changed around 5-6k miles.
I'm looking forward to see the difference and let you know.
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