I have done some research, and it looks like alot of people have gone with seafoam. i saw kakarot write up. but i really dont know how to put it in the intake or VAC line? also there is a part where is says "this change is gona be mobil1 clean5000 5w-30, then the mobil1 5w-30 syntetic full. so now I have $2 a quart and then $6. it is for the best couse the gooii stuff will start to acumilate in the carter and it is for the best to take it out." i already been doing 10-30 synthetic full. do i just change to 5w-30 synthetic. or go back to regular oil than synthetic? My car has 100k miles.



A4 2000 Quattro 1.8T MTM chip