OK ... this past weekend was "maintenance time". Oil change ... $63. DIY ShadeTree Mechanic. ... Lucas synthetic oil stabilizer, SeaFoam synthetic oil stabilizer, Pennzoil Platinum 0-20, Castrol EDGE 0-20; top STP oil filter (on sale). 20-minutes. Tires ... $530 (after rebate). Continental Control Contact Tour A/S Plus (whatever that means that means). In-out half-hour. Filled tank second time since 3/16 ... 62.8 mpg.