A couple years ago a fellow mentioned I should use diff lock on the 1270 when spraying. At the time I thought it would do no good, but I tried it once and it was easier to keep the tractor going straight with it on. I then began using it when planting also and it certainly helps going straight there also. I have been hauling beans to town with the 1370. Accidentally I engaged the diff lock going down the road. On this short wheel base tractor I was able to drive straight down the road with less wagon wandering also.Just have to remember to tap a brake BEFOREyou get to a turn. Diff lock, try it I think you will like the other uses besides just heavy drawbar pulling. Rod.