Auxiliary drivebelt life expectancy on '93 854?

How long should I expect the auxiliary drivebelt to last on a '93 854?

I ask because my garage has just changed it after only 11K miles / 9 months since the last new one was fitted.

Seems a bit short to me that! Wondering if there's a parts warranty I can invoke.

On a secondary note, it was put on in an attempt to cure a god-awful rattling / squealing noise coming from the cambelt / auxiliary drivebelt area of the engine when cold (ie, first thing in the morning). Later on in the day, the noise tending to go away (though not always).

With the new belt fitted, the squealing has gone (for the time being), but not the rattling when cold.

Can anyone shed any light on this problem? I'm not too concerned about the noise itself, but more worried that it might be a sign of an imminent failure of something!

[sholtby]

You are supposed to check the aux belt every 20k miles. Your problem is probably a seized tensioner. You need to use a suitable tool and work it from side to side and add a couple of drops of oil to where it pivots. If it is seized the tension wont be enough to stop the belt from slipping and causing the squealing noise.
If that doesnt fix the problem remove the cambelt cover and make sure the cambelt, waterpump, tensioner etc are OK or very expensive damage may occur.

Simon