most of what u asked can be found thru the search function. it doesnt really bother me but others get slightly allowed.
welcome to ceg
and heres my answer.how many miles does the car have. switching to synthetic isnt a problem. some say not to do it if car is high mileage. mobil1 is used alot on here. alot use amsoil which i use. redline and a few other brands. filters again i use amsoil. i think the majority of mobil1 users use a k&n filter. svt takes 5.8 quarts but we fill just above the max level so we put in 6-6.3 quarts.
