Used have one when on the farm ,bought new in 67,kept it about 20 years.Good all rounder tractor,road speed was slow about 18 mph,hydraulic used bounce a little like hiccups.Suppose an iconic tractor! Nice video showing it off ,second into third was ok ,fourth usually crashed gears.
Checking the diesel while driving... Total boss move........ Hahahaaa!!!!!! Try doing doughnuts then getting on 2 side wheels like a quad... Without tipping it.... A bit tricky but it's doable.
I had a B275 with a front end loader that did that and it was down to the tracking, toed in to much. Try adjusting the track rod by shorting it a bit at a time untill it eliminates wheel wobble. My tractor was so bad that driving on the road was impossible until I adjusted it and even with play in the steering box it was ok after.