Subject: Re: V12 Boiling
A hot topic indeed! By the "entire cooling system" I also meant the cylinder head of course. It should all be free of calcium and rust deposits. If there is a blockage in the cylinder head which the cooling fluid can't reach you will indeed get overheating at that point which the temperature gauge will not show. However, that blockage can only be caused by the use of water with antifreeze. Even "soft" water contains calcium which will eventually form a deposit. Also the aluminium parts of your water pump will corrode when you use water. I therefor still recommend that after you have unblocked and cleaned it all, you use aluprotect coolant.The problems will not come back. By the way, the 2L not only has no electric fan - it has no fan at all!