I've always kept to the original 5 years or 72k on my 10v models, they don't really suffer at all with cambelt problems, I can't even remember the last time we had one in the workshop with a broken belt or bought one to break with a broken belt. Loads of 16v and 20v engines, but never really the 8v or 10v. Even my first 156 2.4 made it to 165,000 miles on the original waterpump before the rot took it. The only one I can think of is one of our courtesy cars had the bearing go on the waterpump, that was our 8v 147 diesel and I think it had about 130k on it at the time, luckily we caught it before it threw the belt off. My current 2.4 had the belt & tensioner done at 72k first time (no pump) and the belt, tensioner, idler & waterpump done at 129k by the previous owner, I'm at 175k now and will probably leave it be for another year.
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