My dealer said BMW recommends the Castrol oils as being more identical to the BMW oils - I've always been a Mobil 1 fan in my other cars and have had no engine troubles while using it.

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Mark _______________________________
2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2 , hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT
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