Kraut-n-Rice

Not really clanking ,just normal cold valve noise . I've worked in dealerships 20+ yrs and its upper end noise just on cold start. We just bought the car and I'm sure the dealer used 5w-30 oil for the change before we bought it . It would only make noise 10-30 seconds after start ,but it was evident that the thinner oil wasn't doing its job. The car has only 39,000 miles and is in great shape ,but I'm not taking chances . This is really my kids first car and I doing all the good things to it. Changing fuel filter soon ,its sitting on shelf in garage. Put strut bar and new Yokohamas H-rated tires on it and equipt trunk with jumpers ,umbrella, gloves and first aid kit ,etc. My last car went 170k fairly trouble free miles and never used oil because of my maintenance overkill. It died when the guy I sold it to 4 years ago put it under and 18 wheeler in December in the snow. I'm aware some of these cars have chain and guide problems ,but I'm sure this car isn't having those problems . I am however concerned with some power steering noise ,thinking about adding some Lucas PS treatment to see if the noise stops there also.All the brakes are new and it has new air filter , but I think the dealer skipped new plugs ,the fuel filter is orig and pcv old ,so I have a couple more things to do before I'm satified.