Force's points finishes were 23rd, 8th, 26th, 16th, 20th, 4th, 13th, and 5th from 1978-1985. Force then had Castrol Motor Oil jump on as his main sponsor, and was even more successful. From 1986-1995, he finished 4th, 4th, 6th, 1st, 1st, 2nd, 1st, 1st, and 1st. He then had fellow driver and arch-rival Cruz Pedregon's younger brother, Tony, come aboard to drive John's 2nd car. From 1996-2000, John finished 1st all 5 years. In 2001, John had longtime friend and fellow drag racer Gary Densham drive a third car. In that same year, John once again finished as the champion, which he followed up with an astronomical 10th straight world title in 2002. In 2003, for the 1st time since 1992, John didn't win the title. It was not all lost however, because teammate Tony Pedregon won his 1st world title. At the end of the season, Tony Pedregon went on to join brother Cruz in their own racing organization, and Gary Densham went on to race independently. John found quick and personal talent in 2 young-guns. Eric Medlen, son of long-time JFR crewmember John Medlen, came on to race. John's other driver, Robert Hight, was his son-in-law and crewmember. Both had a lot of success in their season, but John topped both in 2004 with a 13th world title.