Join Date: Aug 2010
FWIW: I change my oil and filter at 5000 mile intervals and have been using Mobil One,15/50,fully synthethic.WHY?? Because if ya look at the oil and feel it's viscosity with your fingers,you'll note that it's still in pretty good shape,not to mention that the motor runs quieter using 15/50.So anything less than a 5000 mile interval,IMO, is a waste of good oil and money.Plus,the 5000 mile interval is easier to remember.lol [tough to get old,lol] But!!! That's me. Dave!!!