Isn't proper maintenance always a prerequisite to equipment longevity? I do not think changing oil in a 4-stroke engine routinely is any more difficult than making a 2T mix with the proper oil level.
Scag Tiger Cat 48-inch deck, Kawasaki motor
Lawnboy 10227 2T push mower
Stihl BG86 handheld blower
Stihl BR550 backpack blower
Stihl KM110R kombi system with lots of attachments
Stihl HS45 hedge trimmer 24-inch blades
Echo SRM210 trimmer