[AndyV7o]

The point in using 10w40 instead if 20w50 is that 20w50 is much too far removed from the origibal 10w30, thus will restrict flow and overload the oil pump.
Yes changing oil and filters at sensible points makes a big difference.

Just read-up on oil extreme. Yes it may reduce friction and wear, but this isnt akways such a good thing, it can have negative effects such as bore polishing which then reduces lubrication to the upper bores resulting in excess heat, which in turn can contribute to pre-ignition, broken rings, and so-on. This is of course over time, but, there is a reason that even really expensive 'boutique' or 'niche' oils dont use these kind of technologies, as long-term they can cause problems and be counterproductive. As you said, change frequently. Use quality oil. Job done.