Just did an oil change on my 8/2011 35d. The oil filter canister lid is 32mm. I couldn't get 1 1/4" socket on there but I had a 32mm one kicking around for some reason.

Oil level was right below the MAX mark on the dipstick before the drain with oil temperature around 81-84C. The oil level page on the iDrive monitor was at MAX.

I pit a little less than 7 Liters of oil back in. With oil temperature around 75-78 and after about eight miles of driving, oil level was below the MAX line around 7/8 and the iDrive displayed a level representative of that level. I will continue checking it.

Drained Mobil 1 ESP 5W30 and put in BMW TwinPower Turbo 5W30. Before these I used the Castrol EDGE Professional OE 5W30.

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8/2011 X5 xDrive35d Sport, Black Sapphire Metallic, Black Nevada Leather, Fine Burr Walnut Trim
2/2001 M5, Jet Black, Exclusive Complete Black Walk Nappa Point Heritage Leather, Black Cubic Trim