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I figured I’d see a chart with viscosity recommendation based on ambient temperature, but it says “do not use any other viscosity other than 0w20” what are you using?

It has the AFM set up. I’ve thought about going to 0w30 or 5w30 but the manual seems pretty serious about using only 0w20.

Wow thanks for all the responses, A little more info Filters : ac delco pf63 since new Sound was mostly noticeable at idle, I can’t remember ever hearing it driving which probably means no. And when it was occurring the first time it didn’t matter if it was warm or cold. The second time it...

Hello everyone, long time reader, first time poster here. I was just wondering if anyone out there has ever experienced what I have on their truck or car. I own a 2014 silverado that I purchased new. It’s got a 5.3 V8 with 80k on the clock. For the last 3 years or so it’s pretty much been...