As a brief history I have summited oil reports since 2005, so I am somewhat familiar with the site… here is my question … I just purchased a 2012 Colorado with a 2.9L and only 23k miles, but this one has the dreaded timing chain rattle on startup. It only last 2-3 seconds and from all the info I could gather on the i-net, its just an annoyance.it has the acdelco dexos1 and ac filter now. With that said, how do I go about finding a better oil for my engine to possibly help quiet it down. No additives, just a quality full synthetic oil. Is it trial and error with brand X, then Y, etc. ? Any insight on where to start is greatly appreciated. thanks, (mods please move if in the wrong section)
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