hi again , just started car on my drive and tried to turn the steering wheel and found it quite difficult it seemed really notchy and i could hear the belt squeeking slightly , ive checked the power steering fluid and it looks really black , and watching wheeler dealers the other day he said if it smells burnt change the fluid , could someone tell me the best way of changing the fluid and the correct type to put in , also what else can i look at if its not that , regards jamesey