few questions
 

My car is supercharged (8-9 psi) the guy who sold me the blower told me to put 5W50 Castrol Syntec in my engine. Is it ok???


Where is the wiper relay???


Do someone haves a nice pics of his flow dump (turn down)

I run straight 50W Valvoline in mine year around with no problems. I did it because the additional heat from my turbo caused regular weighted oils to thin out and my oil pressure started dropping very low. Now I don't have any problems.

Sorry, can't help on the other two.