16-11-2017, 10:40 AM
Yesterday I decided to have another look inside the sump (the oil pressure relief being in such a daft place to get at that I thought I'd just check on the obvious things again first). Lo and behold - water. Despite having thought all of it was out, and having done two oil changes, a small quantity of H2O was evident. Cleaned everything, turned the engine over several times on the handle, put it all back together, fresh oil. Voila. 10lbs+ on startup and 5lbs on warm running. No sign of frothing. Happy days. Thanks for all suggestions.