So I took my 2018 with 36K miles in to the dealer to have the 21N08 done cause I had a very slight shudder after getting the 21N03 done. When I picked it up the Service advisor asked if I had a Rattle at start up and I said no which I don't. He then offered to replace the Cam Phasers anyways and said he would order the parts and get me scheduled in. My question is should I have them replaced even though they aren't making any noise at the moment or should I just wait until they do? It was a CPO truck and I got the extended warranty 7 years 100K
Thanks
Thanks