Hello all, New to the site and to my Z4 having just swapped from a motorbike. I need some help choosing the correct oil. I have a 2006 2.0L, an oil light has come on, when checking the oil level it states that I need to add 1 litre if oil. I am struggling to find an oil which matches the description in the handbook. IE BMW longlife 1. When searching on line some sites have suggested 5W30 and others 0W30. Some advice would be very much appreciated. The service history shows last service completed by BMW in April distance travelled about 1500 miles. I have had the car approximately 3 weeks. I assume that a BMW service would fill the oil to maximum. Is oil usage at that level typical.