The only time I have used 4Lo in the snow was to c r e e p down a hill that had not been plowed, but had been well traveled. The snow had been packed down pretty well, so it was almost as slick as ice. In 4lo and the tranny in 1st gear I could go about 5mph down hill. It allowed me to stay in control. For everything else in the winter, the 4hi TOD does just fine.

Max speed of 68mph in 4lo??? I don't know about that...