Golfer Arnold Palmer, sometimes alongside his old tractor, appeared for decades in TV ads for which motor oil brand?

Which type of U.S. military discharge ranks below a bad-conduct discharge as the most severe? In the U.S. Army, which marching cadence is set at 180 steps per minute? The 1926 Army–Navy football game was played at which newly dedicated Chicago stadium? Army psychiatrist Dr. Sidney Freedman visited the doctors of the 4077th on which classic TV series? Arnold Schwarzenegger dances the tango with Jamie Lee Curtis in which 1994 film? Arnold Palmer won which golf major four times, in 1958, 1960, 1962 and 1964? In Stephen King's novel, teenager Arnie Cunningham's 1958 Plymouth Fury goes by what feminine name? Arnold Palmer's first win as a professional came in 1955 at which national golf championship north of the U.S. border?