Everyone should seafoam there car with the oil they have now drive about a thousand miles. Then change to royal purple or amsoil and use a good oil filter and you can go about 8-10 thousand miles. Just keep checkin ur oil to see i its still clean. When i seafoamed my car my oil stayed clean for a long time. Im goin on 7k miles right now with same oil.
It's all good.
If you really want to know how each one chemically breaks down and what they are made of, you can go to "bobistheoilguy.com"
He has chemistry labs break down all of the synthetics and you can read all about it. I use Mobil1 Extended Performance with Mobil1 oil filters.