Hi I'v got a td5 Defender , and had a td5 Disco , One thing you must change is the thin black plastic pipe that runs from your radiator to the expansion bottle . They go hard and brittle at the radiator end . They crack or snap and you well loose your coolant and over heat . It hapened to me . I told my mate about it and he checked his , and yes had gone brittle . So do yourself a favor and replace it . You can then try to see how flexable it is . I bet it snaps like a carrot at the radiator end . Jim

