Was recently gifted a 2004 Pontiac Grand Prix. I don't know much of the previous history other than it was elderly driven and stored indoors. The 3.8 series lll has 186k on it. I have driven the car back and forth from work, 50 miles round trip for about a week. The other day I changed the oil since I didn't know how old the oil from the previous owner was. I changed it with a wix filter and valvoline conventional high mileage 5w-30. Today I started the car up and noticed a slight tick. Not sure if it is a lifter or what? Don't really want to dump the fresh oil to try a different brand/type. Any suggestions ?