I think you have jinxed me! Drive home tonight accompanied by fluctuations on the temp dial and occasionally blowing cold air when it should be hot...... Coolant looking a bit low...... I fear a HG failure......
Easy way to check is to see the system is pressurised, or bubling. But I would check for leaks. Leave something carboard under the engine bay to check for leaks so then you can trace.
I think you have jinxed me! Drive home tonight accompanied by fluctuations on the temp dial and occasionally blowing cold air when it should be hot...... Coolant looking a bit low...... I fear a HG failure......