Missing coolant
Discussion
Hi, the coolant level on my Speed Six Cerbera has dropped 2 - 3 inches without explanation. Local garage can’t find any leaks. Suggested possible cylinder head gasket, but is this possible if it has passed a hydrocarbon test? Car is running great, has covered about 500 miles over the past 3 months. Has a longstanding issue with heater suddenly turning off on the motorway then turning on later. As if there is an airlock or other blockage affecting the water flow to the heater. But that is probably a red herring....
Update - all is well. This turned out to be a leak from a corroded coolant pipe. Then on another journey I was at fault for managing to get the coolant cap on the wrong thread - but all ok as I never hit any traffic. Mine is the set-up with the ancillary electric water pump by Davies Craig, temp controller and single large high flow fan. Local garage removed thermostat when coolant pipe replaced - and it ran too cool - 70 in the cold weather at the beginning of April. So I part covered radiator with cardboard! I have removed this now and want to see how it goes over the summer without the thermostat. Off to Cadwell Park on 25th May.
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