That's mighty interesting, @
EIGHTLUG. I appreciate that information, however I doubt its applicability to street and off-road driving:
- Your diesel generators were designed for steady state operation. Automobiles don't operate that way. Off-road vehicles even less so.
- Diesel generators and gasoline powered engines are very different power plants, operate differently, burn different fuels, have vastly different compression ratios, etc.
- Diesel generators don't move, so they can have huge filtration systems. How big were the filters on those generators?
- Because weight is not a factor in stationary diesel generators, they can have huge oil capacities. Betcha your generators had more than 7 quarts of oil in them.
All of those will greatly affect the results of an oil analysis.
I use fully synthetic motor oil in everything I own, including the lawn mower. I really am a great fan of synthetic motor oil. I change oil at 6,000 mile intervals in my Raptor and my wife's Ford Edge. Following this scheme in several decades worth of previous vehicles, I've never suffered any kind of mechanical engine failure. I drove a 1986 Nissan D21 4x4 for 19 years and never had a failure. My method obviously works quite well. I trust my personal experience a LOT more than I trust the auto manufacturers.