Hi Gents. Posting this as I am not sure what to do. My 2018 forester xt is experiencing a cold start chain rattle. Essentially the chain tensioner is leaking oil over night, which causes chain to loosen up. Every morning it slaps for about 3-5 seconds. I reached out to few dealers, one told me he couldn't hear the slap, another stated it's normal for these engines. I am concerned since I do lots of mileage and the car will be out of warranty by the end of the year. I reached out to Subaru Canada and their response is if the dealer states it's normal, they won't get involved. What options do I have here? Subarus website specifically lists that chain tensioner is covered by powertrain warranty.