Third deployment is around the corner, and my son had one of the guys on base change the oil out in his 2000 BMW 323i. I told him get a Euro oil either 0W40 or 5W40, and change it out along with the filter and a list of other things to do in preparation. His buddy ended up using Mobil 1 0W30 instead. I don't think its going to matter much since more than likely the car is going to be sitting until 2010. I'll tell him to put the right oil in when he comes back.