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Whether to use semis synthetic or mineral, I don't know. There are fairly recent posts advising caution or even against full synthetic, and cautioning that oils appearing to be semi synthetic might not be all they seem. I am going to follow Royal Czar's example and change to mineral. Simples decision I reckon.
A search of the forum shows that the oil filter benefits from a non-return valve that stops it emptying. Apparently the Volvo filter (made by Mann?) and the Mann filter are known to have that valve. Or, one could buy what is cheaply available.
Gosh I think changing the "crush washer" is recommended. But gosh they cost a couple of pounds so it is a good ethos idea to only change them alternate times.
I might well fade out of the forum. Some members might be pleased.
I am sad that the advice and knowledge that good members have given to us in the past is rubbished so often.
Comrade Stephen Edwin
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