I have to agree with Bill in Utah. My brother is non-technical, numerous 10k mile OCIs and never kept records, uses cheapest dino on the shelf. He has a 1983 (I believe) ford ranger with 300k miles on it. Original engine!
I use an expensive synthetic (Motul e-tech) but only have 40k miles on my VW W8. I use it for piece of mind and the hopes all the hype is true, lol.