my cambelt has been changed at 122000 km, 6 years ago(It was done by previous owner). Since I have bought the car February this year, time from time, there has been a rubbery noise, not to be spoted if you are not carefull. Some mechanic told me that it is due to over-tensioned cambelt, and that this is not so dangerous. But, last months I hear this noise more often and is somehow deeper. I need it just for another 200-300 miles, and then I will change them. What do you think that it will last?