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What rather puzzled me was why the timing chain has a 10 year replacement comment on it in the owners Handbook?
I can understand belts perishing with age but chains dont perish ! Maybe there are other 'associated' auxiliary belts, pulleys and bearing which would fail first .
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The chains get loose and also the tensioners. This leads to catastrophic damage on some engines in a short time (usually ~60000km), for example the 1.2, 1.4 and some 2.0 liter VW engines with timing chains.

So for my Chevrolets (Captiva and Spark) I will at least check the timing chain tension after 10 years...
 

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Probably be quite a big job checking the timing chain tension on the 2.2 engine. It's important to change the oil and filter regularly, if you don't, you get little hard carbon particles in the oil which cause the chain to wear out.
 
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