CREATE TABLE table_68739 ("Year" FLOAT, "Entrant" TEXT, "Chassis" TEXT, "Engine" TEXT, "Pts." FLOAT)

In 1972, what was the highest number of points with a Ford engine and an entrant of Brooke Bond Oxo Team Surtees?
SELECT MAX("Pts.") FROM table_68739 WHERE "Engine" = 'ford' AND "Entrant" = 'brooke bond oxo team surtees' AND "Year" = '1972'
SELECT MAX("Pts.") FROM "table_68739" WHERE "Engine" = 'ford' AND "Entrant" = 'brooke bond oxo team surtees' AND "Year" = '1972'