At this point if it goes, it goes. I've gotten my use out of it. I just noticed the chain rattle a few weeks ago but I think it's because I don't drive it much anymore. The oil drains off the chains. I may take it out more often and see what's what.Still on the original water pump? If not, you might want to proactively replace that along with the timing chains. I've got a Taurus and the 3.5L's internal water pump is the one thing that keeps me awake at night...
