Cool Murray, thank you very much for the info. I bet you know about your job and I won't go cheap here.
It is essential to have the best affordable coolant! No doubt about that. and I'm sure Australia can get a bit sunny!!!
I just replaced my thermostat, it had the worn scratch marks in the wax chamber again. I don't waste my heads for a 9 € thermostat.
It took a lot of scrubbing to getrid of at least the visible dirt inside the engine.
A rifle bore cleaner and several bottle cleaners are good to use for that. Chemicals alone are always difficult. they simply can't replace a good brush.
So a good coolant is very important. And access to a better one is extremly valuable.
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