Hi chaps. Anybody any experience of occasional overheating causing water loss. Temp gauge NEVER moves much above 1/4 so suspect thermostat/sender is up theduff, no other signs of fault anywhere - no water in oil, engine runs clean (no smoke or steam). It usually happens when engine is under load for a time - Towing or climbing gradients fully loaded. Vehicle is 1993 Disco 3.5 V8i All help appreciated.