Cambelts. What is the correct service interval?
On ALL petrol Omegas the cambelt kit (belt, tensioner, pulley) should be changed every 40k/4 years
(whichever comes sooner).
Do not just get the belt changed (whether DIY or garage, ensure the receipt is for the full kit).
It is the tensioner that usually fails first.
On a multivalve engine, this usually means you replace the engine!
If you have just bought the car and you do not have a receipt for a full kit change, budget for this to be done ASAP!