I have dads 57 wd45 diesel. he paid $1200 back in 74. The engine had just been replaced due to a valve that broke a piston.
Dad bought it for the MF baler. he had a farmall M with M&W pistons. The M would not tie the knots when baling up hill. The wd45 would bale uphill in 3rd gear and never miss a bale. The farmall M was sold.