Always buy the best oil you can afford , for any car . Newer tighter engines need a thiner oil eg : sae 20/10 or 5 , older engines require sae 20/30/40 . Synthetic engine oil is always better than mineral oil because it's designed for a specific job and usually less prone to sludging .
Unlike a lot of things in life you get what you pay for and it's better to error on the side of caution . I always buy valvoline synthetic engine oil for my Honda Accord Coupe.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.