Has anybody ever considered that maybe the oil wasn’t filled all the way full from the factory? Or after the first oil change by Toyota, they also didn’t fill it all the way top either.
I am surprised more people aren’t using 0w30 or 0w40 oil. The first number is for when the oil is cold(first startup) and then second is when the oil is hot (which is the most important) On cold cranking, you want the thinnest oil weight so it lubricates the turbo/motor faster.