What Coolant Goes Into My Land Rover? What Anti-Freeze (Coolant) To Use In Your Type of Land Rover or Range Rover. Hi my name is Doug and I'm the tech support representative for Atlantic British, your Land Rover parts supplier. I wanted to touch base on this video about anti-freeze. I get a lot of questions about what anti-freeze I should use in my Land Rover. Land Rover Defender 90 Engine Coolant Temperature Sensor The average cost for a Land Rover Defender 90 engine coolant temperature sensor replacement is between $112 and $212. Labor costs are estimated between $44 and $111 while parts are priced between $68 and $101.