I Have an 159 JTS SW 2009 model (only owned by me). I bought this car just because it had chain solution (fooled to believe I then would have less car "maintenance" as cambelt, regarding belt changes). Back in 2009 no-one knew what problems this GM/Alfa-chain solution could give. When it came brand new direct from Italy to my Alfa dealer and me no one knew?? that the chain could be an issue.
Since then the Alfa dealer have changed the chain 3 times (luckily it goes on customer warranty even that the car now is 7 years old).
The Alfa dealer is as me interested to figure out a solution to avoid this cases (of course). We have googled up and down pages regarding this, they have spoken directly to the Alfa fabric in Italy. Now they have figured out that there is a Valvoline Alfa/Fiat oil to use. I have always used the Alfa guys to change oil and filter every 12000km so I was sure the chain got the right fluid not to stretch. But as said, it has stretched 3 times. We have used recommended oil, but later they have found out that even if it's recommended for this engine there is particles in the oil that makes the oil jetty not effective enough. Hence the chain does not get enough oil and clean enough oil so it sooner or later will stretch (that's what we believe). Now I have just changed chain again, but this time the Alfa people have come up with that there is an oil type they want to try. They also talked to the Valvoline responsible in Norway. This is Valvoline 5W-40 fully syntetch : Recom: FIAT 9.55535. H2 M2 N2 and Z2 (http://valvoline.no/images/products/...40_001-20c.pdf
). The Valvoline dealer says this is the oil that could fix the issue with the chain. Way better long life and particle free. So if I follow up by changing oil and filter every 12000-15000 km the chain problem should be history. I'm tired of starting the car and see if the "Have engine checked" light arrive. So I really hope this will fix it. Anyone else with a history of "how my alfa got rid of the chain problem" out there? or other input so we can see a solution to this. I guess my car now earliest will have chain problematic in 2017 (after new 50-55000km on the road). But if no HEC arrives (P0016 or something) then, then it must be the oil I've changed to that was the "holy grail". But I have doubts. Fingers crossed.
..also anyone heard of this engine not having chain problems?
1'st chain change: 37200miles (60000km)
2'nd chain change: 56000 miles (90000km)
3'rd chain change: 77700 miles (125000km)
Car has now gone 80778 miles (130000km). All services and good maintenance. Does approx. 50km per day of driving.