Guide: Ford Fiesta ST150 Cooling System Overhaul | Full Refresh

Keeping a hot hatch alive in the frozen swedish Arctic isn’t easy. In this episode i carry out a full cooling system overhaul on my mk6 Ford Fiesta ST150 to make sure it can handle daily driving in extreme temperatures. With winter lows dropping well below freezing and summer 24h sunshine putting extra strain on the engine, the cooling system has to be 100% reliable. In this video, I replace and refresh key components including the radiator, thermostat and coolant, while sharing practical tips. If you daily drive your mk6 ford fiesta ST150 – or any performance car – in harsh conditions, this job could save you from overheating, breakdowns or expensive engine damage. Real workshop work. No shortcuts. Just keeping a performance car reliable in the Arctic. In this video: Full mk6 ford fiesta ST150 cooling system overhaul Common cooling system issues and warning signs Tips for bleeding and refilling coolant properly Inspection of hoses, thermostat and radiator Arctic daily-driver reliability upgrades Follow the build and daily life with the ST150 in northern Sweden. Keywords: Ford Fiesta ST150, ST150 cooling system, Fiesta ST overheating fix, cooling system overhaul, radiator replacement ST150, thermostat replacement Fiesta ST, daily driven ST150, Arctic car build, winter car maintenance, performance car reliability, Ford Fiesta ST Mk6 maintenance, cold climate car care, kylsystem, vattenpump, kylare, glykol, spara pengar, gör det själv, mekaniker, reperation,