[Krystek8484]

Hello Everyone. I’m new here. Found forum due to issues with my Hyundai. I have lost interior heating. Done few checks , tried to flush coolant and a lot of rust came off … I’m based Heathrow… after few weeks of lost heating I noticed engine temperature jump down on motorway … few times flushed the old Copland helped and heating improved from driver side but passenger side still a bit cold air … is it hard to replace thermostat ? I got some mechanical knowledge and some little tool box …