Originally Posted by timbits
I'm past 200k and I just use cheap synthetic. Usually castrol edge from Costco. Ive sent in for oil analysis and have been cleared for 14k+ change intervals.
This makes me thing that most uses are changing way way way too often. And are unnecessarily concerned with brands/specs... But get an analysis done. You'll be surprised how much longer your oil can last.
My only rebuttle to that is that although your oil would come out nicely, it doesn't mean it doesn't sludge up inside, which is where some of the "harm" comes into play.
Kinda like how clean water can flow through pipes, but pipes eventually get clogged or dirty (1st time home owner, and it's annoying me lol)