No mayo in expansion tank or on dipstick.
In fact when I removed the rocker covers there was no mayo below the rocker gaskets, only above the gaskets.
Gets driven 40-50 miles per day (2x 20 mile dual carriage way 60-70mph trips).
Have just cleaned mesh gauze filters, cleaned out as much mayo as I could, fitted new thermostat and inlet gaskets. After a couple of weeks and 4-500 miles I can see through the oil filler hole that mayo is building up again. Been topping up with coolant still every 2-3 days.
I’m puzzled as there doesn’t appear to be mayo in the oil at all.
I did notice some pitting on the inlet manifold to head mating surfaces, but any leak here would not explain the mayo, would it?
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