How do I make sure my radiator valves are open?
How do I make sure my radiator valves are open? Open your radiator valves Now open BOTH radiator valves on each radiator completely, by turning them anti-clockwise (to the left). For manual valves and TRVs it's easy to do by hand. How can I put water into my car radiator? Loosen the radiator cap carefully, using a towel or thick cloth. Step back and allow the pressure to release before removing the cap completely. Add the highest quality water you can get to the radiator until it reaches the fill line. Replace the radiator cap, tighten it until it clicks...