What type of hydraulic fluid is specified for a 1967 Mustang convertible hydraulic pump?

red transmission oil. no need for iso 40 hydraulic oil, red is light weight and that's the trick. simple,,getting to the resovoir is another story,usally throught the rear side panel or if your luckey, the trunk rear cover below the rear window....either way you need to buy a tool for the correct way to remove the panels.