In Reply to: Mobile 1 15W-50 So.Cal. posted by Austin on February 28, 2001 at 12:20:26:
What grade do you use. I know the recommended mineral oil is 10w40, but what should be used when using Synthetic oil?
Something like Mobil 1 5w30?
The previous owner of my car used synthetic. Despite specifying I wanted Synthetic oil used on a service a while ago, the BMW dealership used a grade of mineral mobil oil instead (10w40) the dumb arses. I kept it in, but 2500 miles later I`m ready to change the oil again and want to use synthetic.