MoS prices are high. Passport does the exact same oil change, and it's less than 1/2 what MoS charges.
Look up the guy with a Silk Green Justa, with probably over 500,000 miles on his car by now. He's followed the computer's recommendation for oil changes, for the entire time he's owned the car.
Remember, the computer is calculating time/miles between changes. You still have to top the oil off, as needed.
Try Mach V in Sterling. They're right at $100 or less, and they do top-notch work. :top:
-Jim