I have a Lister Petter elec. start diesel engine setting in my barn. 12 HP, I think. I was told by a LP engineer that engine was built for the Alaska pipeline, and was run non-stop. They changed the oil while it was running. Cost $3200 back then. No longer made.A "Lister Petter" generator is the very best that money can buy.
150 years of Lister Petter engines made.
Few are aware of the brand!
I need to use it for something before I die! It's setting on an air compressor tank and I manually turn the flywheel every once in a while.