Hot Stuff (1956)

The stooges are government agents entrusted with protecting professor Sneed, who has invented a super rocket fuel. Larry is mistaken for the professor by foreign agents who kidnap the trio and take them to the country of Anemia where they are ordered to produce the rocket fuel or be executed. The boys come up with a concoction they try to pass off as the real stuff, but are exposed when the real professor and his daughter are also kidnapped. The stooges help them escape, using their secret formula to fuel a jeep.