I once owned a MF 533 (2007 version of the 135). It had a Perkins NA 202 CI 3 cylinder, long stroke engine derated to 45 PTO HP for use in the single reduction 533. It was a torque monster and used very little fuel.
The same basic engine was used in turbocharged application up to about 70 PTO HP, so it was loafing in the 533.
FWIW: I replaced the 533 with a Kubota L6060 hydrostat in 2016, knowing that the 6060 was a guzzler. The L6060 has a 4 cylinder 148.5 CI turbocharged engine rated at 53 PTO HP and is a dream to operate but it uses about three times as much fuel to mow the same parcels with the same mower as did the 533. I do, of course get the work done more quickly.
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Today's Featured Article - Reflections of the Fifties - by "Country" Elliott. I remember rowing up in the 1950�s in a small, rural town in northwestern New Jersey. The closest town to ours was only 3 miles away, and there were seven dairy farms in the areas of these two country towns. We had 5 acres, and because my Dad was a salesman and not a dairy farmer, he let the Bockovens, who owned the Willow Tree Dairy farm most of our land.
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