Shell Rotella has announced the availability of the 2008 SuperRigs 25th anniversary calendar, which will also include a commemorative DVD chronicling all three days of the silver anniversary event in Joplin, MO.

Nearly 120 trucks entered SuperRigs this year. Curtis Christians of Rockford, MO won “Best of Show,” earning $10,000 and a spot on the cover of the 2008 calendar.

The calendar is free for drivers who get a Shell Rotella T oil change (minimum 10 gallons) at participating oil change centers through the end of the month or while supplies last. It can also be purchased at the Shell Rotella website.