And after all that, Ram is shipping the trucks with conventional Penzoil in the crankcase and recommending their customers follow suit………..hmmmmm……….
What is wrong with that? Do you know something the PhD's don't?
People have a way of hyping up products (ignore the marketing hype, I read it on the Internet, and the he said she said stuff), in this case, synthetic oil. Yes, there are benefits but most people change their oil more often than required thus tossing out the benefits of synthetic oil and its blends (there are exceptions).
I wish I had the ability to hook up a few of the lubrication experts I worked with, there would be a change of attitude on oil usage, a little bit of knowledge is, well.
I will leave it at this, there is a lot of research that goes in to what the manufacture recommends, it is far from an off the cuff decision. I'm not interested in changing any one's opinion but I would encourage you to research and to understand lubrication. I am happy to share my powertrain engineering experiences with anyone interested but I am not interested in debating, in is not productive.