[JFP in PA]

The tensioners have been updated a couple of times over the years. As these things both wear and become glazed with varnish and filled with small debris in the internal oil passages which can be a source of start up noise, replacing them as they are already out is a no brainer. Some have cleaned the old ones by pumping hot cleaning oil through them on the bench; we just can them and put new ones in. Just be sure to get the correct ones for your model year and you will be fine. You really don't want to be doing this entire process twice............