1986 Mack R-Model (R600/R686ST) Startup and Walkaround
A quick start up, walk around, and rolling a little coal in an old one-stack bulldog Mack R-model tractor that belongs to a friend of my grandfather. This is a 1986 R686ST with a 300 HP Maxidyne engine and a straight 5-speed transmission. There are still plenty of these old things running around making money today, especially on farms. This one is hooked to a grain trailer and is being used for soybean harvest. It was a former Matlack tanker fleet truck (hence the lack of a passenger seat). Enjoy.