A lot of answering your own questions going on. I never knew anyone who tried to compare a 4030 to a 4020. You're not going to tear up the tractor from "heavy wagon pulling". That would have more to do with tractor weight. Of course speed would be limited by power. I was always amazed about the guys who liked synchros in 3020, 4020, 4620 etc. but wouldn't consider one in 30 series tractors. There are several jobs that synchros are better than quads. Plus that is one less thing to worry about going bad in an old tractor. Changing antifreeze each year helped with the cavitation problem but again an old tractor might already have cavitation. As far as 4030 problems there were several that broke the fronts of the transmission cases. I don't know the cause but there were more that didn't. My biggest objection was AC on top of engine instead of the side.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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