If you had the choice of 2 identical tractors, each has around 1000 hours on it. Tractor to be used year round, plowing, mowing, etc.
One is 25 years old with a Briggs Vanguard 16hp, the other is 30 years old with a 16hp Briggs flathead twin. Both tractors are in the same decent shape for the year, same level of maintenance, same price range.
Which engine would you expect to last longer going forward, no stuck valves, pulled out seats, spun bearings, etc.
Which engine would require less fiddling with down the road. How often do you have to adjust valves on a vanguard, do pushrods or rocker arms go bad?
Any experience, opinions, etc welcome