In 1971 Jean took his Motul sponsorship to the independent Frank Williams Racing Cars team, and he drove their March 712M Formula Two car for them at Rouen and Pau.
En 1971, Jean levou o seu patrocinio a Motul ao equipo independente de Frank Williams Racing Cars e pilotou o seu March 712M de Fórmula 2 para eles en Rouen e Pau.