I have a 2012 5.0 with 17500 miles. I've changed the oil about 6-7 times already and never got this. Yesterday I went with amsoil dominator 10w-30. I've been running regular royal purple oil 5w-20 the first four oil changes, tried the 5w30 oil the 5th oil change and after reading the oil recommendations on the greasy spoon section chose this for E85 motors which is what I'm running. This tick has come up out of nowhere right after oil change on the drivers side. I hear it the worst in 4th gear at about 3k rpm. It's really loud as I can hear with windows up or down. I thought the tick only occurred sometimes after 1st oil change not 6 oil changes later?? Any recommendations?! I finally got the car running how I want it an now it starts making this stupid noise.