- Joined
- Jul 14, 2020
- Messages
- 522
So, so if I want to use a high mileage oil for my 98 Mustang 3.8, and the car sits in the garage all winter, and even in the summer it sits anywhere from a week to a month between uses, would I be better off to use full synthetic to conventional? Either way, the oil will be changed in one year with less than 2000 miles on it and using an ultra Fram filter.