yo cre
well I want to drain the whole system and see what comes out from each section, so far the radiator is clean (if there were a radiator leak would it not eventually drain of water and would the reservoir coolant not get sucked into radiator as the radiator drained);
since Toyota garage did a compression test on cooling system and diagnosed no water getting to engine what else could cause no pressure in cooling system - maybe radiator leak but I am not losing any coolant volume;
filling the system up again hopefully getting the full 8.2 litres in - wouldn't this also tell me that the water is getting to the engine, perhaps.
I just want to reassure myself; see with my eyes coolant coming from each section of the cooling system with no sludge.