We replaced our Volvo
MD40A with a Beta 90 seven years ago. Now the engine has about 2,500 hours on it, has never failed to start and run well; burns no oil
between changes; doesn't leak a drop of anything; consumes less than a gallon of fuel
per hour (pushing a 40,000-pound boat at 6 knots); has two alternators (one 100-amp and the other 175-amp); is quiet and smooth - it gets louder at Wide Open Throttle but runs just as smooth.
Having worked in the construction and agricultural equipment
industry, I was well aware of Kubota's legendary reputation. Whereas Yanmar also manufactures equipment
for the same industries, the engines they market for sailboats are designed for extremely light duty, which a sailboat application is. Personally, I prefer an engine that is designed for a heavy duty application, giving me a wide margin should I ever need it.
Fair winds and calm seas.