I was told by a mechanic (ASE certified of course) that barring SPECIFIC
owner's and/or repair manual instructions to the contrary for your
particular make/model of vehicle,that ALL engines that have timing
belts/chains should be replaced at the 100,000 mile point AT THE OUTSIDE
mileage range no matter what.You can take this for what it is worth,but
I tend to believe it as a general rule of thumb.