Vehicle: 2019 Lincoln MKT Livery Engine: Ford 3.7 Liter Duratec V6 Driving style: Used for livery in NYC area Oil filter: Royal Purple Air filter: Motorcraft Oil: Amazon Basics 5W40 Euro (Warren Distributing) Rightmost column is Mobil Turbo Diesel Truck with BG MOA, middle column is Amsoil Signature Series 5W30...currently have SuperTech 5W30 in the engine and that will be next. Not interested in extended oil drain. Firm believer in 5000 mile interval. The 5W40 type oils I did notice less chatter and a quieter engine. I spend my day driving and I notice these things. The 5W20 oil that is speced for the engine really made it chatter. The thicker oil made it feel more refined.