I told them that mine had had longlife services and was told that I should stick to longlife-spec oil as changing to fixed-spec oil could cause damage to seals. This smells of BS to me. The car must come out of the factory with seals suited to both specs of oil. Does anyone know if there is any truth behind this? Was he on commission?
I ended up buying 5l of Comma 5W/30 fully synthetic "Prolife" oil which meets VW 504 00 and VW 507 00, for £39.99, with a view to returning the Halfords oil.
When I was in Halfords yesterday I was specifically looking for VW 506 00 spec oil which they didn't have. I hadn't read this thread and didn't realise that VW 507 00 was a substitute. With this knowledge I'm inclined to return both the oils I've bought and get the Castrol Edge from Halfords instead, as I have more faith in Castrol than Comma. What do you think of the relative merits of Castrol vs. Comma as oil manufacturers and more specifically the 2 oils concerned? You'd expect that if an oil meets a specification then you don't need to worry about quality and can compare/choose on price. However, things aren't usually that simple...
Mark