Hi i have a 2004 td5 auto just after i bought it the oil departed from the auto gearbox had new oil pipes fited now 4000 miles later i have no reverse and am not sure i have 4th gear the transmition temp warning light came on a couple of times then goes out and help would be appreciated

just bought 2003 td5 disco auto 93000 miles after many years of wanting one,i knew the owner and all services been done i was going up a moderate hill , cruse control on at about 75 mph, gradually lost drive power . the rev’s where climbing To about 4000 , when I managed to pull over ...