2008 Bmw X3 Engine Oil Type - Engine Cylinder Head Valve Cover For BMW 335i 640i 740i X3 X5 X6 535i 135i X1 X4 | eBay - I tested factory 5w30 with my own oil change at 5k miles, and it looked like good oil with low metals, but it was 10 cst @ 100 c.
2008 Bmw X3 Engine Oil Type - Engine Cylinder Head Valve Cover For BMW 335i 640i 740i X3 X5 X6 535i 135i X1 X4 | eBay - I tested factory 5w30 with my own oil change at 5k miles, and it looked like good oil with low metals, but it was 10 cst @ 100 c.