Originally Posted by TWerner
Hard to make it pay if you only burn one gallon an hour.
My tractor's diesel wasn't cheaper to maintain, it was the same as a gas engine. Filters and oil. I can't think of many other costs. It did get an oz of marvel mystery oil in every tank of fuel, but that's like scooby snacks for the dogs and cost a few bucks a year.
I'm curious, before that 2000hr mark where you buy a new gas engine, how much do you spend on engine maintanence? I've had to rebuild a carburetor because I left old gas in all winter, but other than that, I don't know what engine costs there are for you guys running gas mowers hundreds of hours a year.
Not too much really, oil and oil filter once per month, air filters twice a year, spark plugs here and there. I replaced a coil once.