I'll add to this. Lake has some pretty good video's on oil and fuel. I'd advise everyone to go through and watch his videos that have to do with Oil, fuel, wear, etc. He backs up a lot of his findings with test results such as filling your oil filter with oil when you put it on.
Here is a newer one on fuel.
https://www.youtube.com/watch?v=DAmEGI7xvBw