Hello, I have a 1997 BMW 740il with 97K miles . I want to change the oil. The manual says 5w30 or 15w40 non synthetic oil. Should I just use conventional oil? I just got this car and don’t know what kind of oil the previous owner used. Thanks.
Hello Ms. Perrault, we would be happy to work on your car, you can contact me at Prestige Foreign Car Repair 239-561-1118. We are located at 12390 Metro Parkway in Fort Myers. Looking forward to seeing you at one of the meetings.