What does the F stand for in F 150?
This eventually changed to F-100 (for a 1,000-pound payload capacity), F-150 (for a 1,500-pound capacity) and F-250 (for a 2,500-pound capacity). In that case, you didn't have to remember that "F-3" meant "2,000 pounds" -- you just looked at the truck's badge and you instantly had the payload capacity.