I realize that there is a lot of information about 5w20 vs. 5w30 on this website. From another forum where an engine "tick" seems to be a problem (2011-2014 Mustang 5.0 engines), the consensus seems to be that if an engine has a "tick" with 5w20, the solution might be to use a "thicker" oil such as 5w30. From what I have read and understand, 5w30 isn't necessarily "thicker" than 5w20. The difference between the 2 is the lube characteristics and not the thickness. Therefore, I do not agree with the solution. Am I correct or am I FOS?