Preventative maintenance, when performed regularly, avoids breakdowns and potentially expensive repairs. It also extends the life of your vehicle. These services include fluid changes, filter replacement, electrical system evaluation, fuel system cleaning, and manufacturer's scheduled. In four season climates like we have here in Minnesota, North Dakota and South Dakota it's common to perform summer and winter maintenance. In addition to basic maintenance, this seasonal schedule may include changing to a higher or lower viscosity motor oil, air conditioning recharge, coolant testing, battery check, and winter wiper blades or tires.