I run nearly the same oil in our two daily drivers. EDGE 0W-30 goes in the Mini and EDGE 0W-40 goes in my X5. Both oils are PAO based with essentially identical add-packs.
I've noticed the color of the oil (when checking the dipstick on a white cloth) is more black-ish in the Mini and more red-ish coming out of my X5. I've had the valve cover off of the Mini, and it looks like brand new cast aluminum (strict 5k oil change schedule since new). The X5 is near spotless, but if I really look in there with a flashlight, I can see a bit of orange/brown varnish on the aluminum casting (was on a 10k schedule until about 55k miles, been 5k since). Is this the source of the orangish oil color? Is the 0W-40 slowly cleaning it?
Both engines are similar in that they are gas, non-Turbo, port-injected, with BMW VANOS and Valvetronic, but with the X5 engine being 3 times the displacement.
I've noticed the color of the oil (when checking the dipstick on a white cloth) is more black-ish in the Mini and more red-ish coming out of my X5. I've had the valve cover off of the Mini, and it looks like brand new cast aluminum (strict 5k oil change schedule since new). The X5 is near spotless, but if I really look in there with a flashlight, I can see a bit of orange/brown varnish on the aluminum casting (was on a 10k schedule until about 55k miles, been 5k since). Is this the source of the orangish oil color? Is the 0W-40 slowly cleaning it?
Both engines are similar in that they are gas, non-Turbo, port-injected, with BMW VANOS and Valvetronic, but with the X5 engine being 3 times the displacement.