Ron starts this episode talking about a chat with a friend at his Cross Fit gym regarding leasing versus buying a vehicle; which is better? He opens the phones today with a call on a 2020 Ford F250 Super Duty Pickup truck where the caller changed the fuel filter and then had some problems getting the truck to start & run. Ron goes over some of the resolution options and ends up pointing out flaws by design in the priming procedure; as published by Ford Motor Company. Next, Ron travels down South and takes a call on a 2017 Chevrolet 1500 Silverado that was recently purchased from a car rental company fleet. The engine had problems with the AFM (Active Fuel Management) system and needed valvetrain repair. The caller opted for AFM elimination with a different camshaft and lifters along with a software upgrade. Since then it has other issues and he needs Ron's help to gain a diagnostic direction. The Car Dr concludes the hour "In The Shop" courtesy of AutoZone talking about marine batteries and their availability. Visit us at https://www.cardoctorshow.com   See omnystudio.com/listener for privacy information.