Yep they are getting an easy 15 to 20 thousand miles from their oil, with a filter change and top up of oil. These miles are being done after having oil samples checked. Something most people don't understand is the synthetic oil does not wear out, just the additive package is depleted. This is then replenished by the topping up at filter change.

Oil sampling is what the big trucking company's do, change oil only after oil samples tell it's time, they also use it to tell when and engine needs repair work done before the engine has a major failure on the road.

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'10 Chrysler T&C Stow-N-Go White. Grandpa's ride.

'13 Chrysler 200 Touring Candy Red. Grandma's ride.

Age and cunning will always over come youth and vigor.