On Alfa number 15
AO Platinum Member
Join Date: Dec 2005
Location: United Kingdom
Having read up a bit more on this, it seems that Opel did modify the oil feed to the chains on engines built from around 2002, as there could be a problem with the feed becoming clogged and not lubricating the chain correctly.
You would think that this design chain would have been carried over to the Alfa versions of the engine, but you never know...
I know chains generally "Stretch" and rattle before they snap, but I would think it is possible for one to snap without warning.
I think you can get the amount of stretch in a chain measured on diagnostic equipment and if it is ok, what I would do is feed the car good quality oil (Preferably something other than Selenia) and change it at half the recommended interval.
Maybe rubber belts are not so bad after all?
You will never be cool driving a Vauxhall.