A friend of mine had a moped store and repair shop in the 1980's. People living under the RADAR used mopeds as their primary mode of transportation, and they'd wear out the engines. Switching to synthetic oil greatly extended the engine life.

My friend's largest customer was the city's drug kingpin. He'd buy a dozen mopeds at a time, and had kids riding them moving drugs cash around the city. The moped engines lasting longer on synthetic oil lowered his operating cost, and he could pass some of those savings to his customers.... the city's drug addicts.

I carry a stopwatch when I'm operating my gasoline powered implements of destruction. My previous B&S lawnmower had 150 hours after 18 years.

My 23-year-old Honda string trimmer has 65 hours.
My nine-year-old Honda mower has 135 hours.
My eleven-year-old Stihl edger only has 20 hours.
My nine-year-old Stihl blower only has 32 hours.
My six-year-old Stihl hedge clipper only has 1.4 hours.

It's hard to wear out a commercial-grade gasoline powered implement of destruction in consumer use. The limiting factor is usually that parts are no longer available. Carburetors last about ten years. I had a hard time finding the "20 year" carburetor for the Honda string trimmer. So, I'll probably have to scrap it at 30 years.

My Honda mower is their consumer model, $500 nine years ago. The commercial verson was $1000 nine years ago. The dealer convinced me to only get the consumer model. He said a lot of landscape companies only buy the consumer models.

I tip my mowers on their front wheels before starting them. That sloshes oil up into the cylinder on the crankcase side of the piston and gets the rings wet before starting. That'd cause some start-up smoke with my old B&S mower., but not with the Honda.

I have some rogue trees growing up against the house. When the supply chain **** is over, I'm getting a fuel-injected Stihl chainsaw to deal with them, $700. One use will pay for it, like it did for that hedger clipper.