The best way to diagnose a coolant leak in a Mini Cooper is through a pressure test and visual inspection. Technicians pressurize the cooling system to identify leaks in hoses, the radiator, water pump, or reservoir. Using UV dye can also help trace hidden leaks. Early detection prevents engine overheating and costly repairs, ensuring reliable performance and safety.<br />https://www.youtube.com/watch?v=X5pIiT-SxgU
