SHOCKING oil catch can & gumout direct injection valve cleaner vs gdi so we have something really special to share today at the NIA community. nates interactive auto also theres another great video Eric the car guy check him out or scotty kilmer or project farm on there channels to see how they clean intake valves. so we also bring your ideas to life tell us what to test and so we will by just subscribing to the channel next comment on my video and say what you want tested and how. for more information or where to find check these links below gumout direct injection cleaner: https://amzn.to/2QoJsoy borescope:https://amzn.to/2UyVrhR sound meter:https://amzn.to/2UudQw5 so we use crc intake valve and turbo cleaner , seafoam spray or motor treatment then we have even tried marvel mystery oil. i suppose its easier to name what we haven't tried we also test royal purple valve cleaner max blast. so check us out. see we have so much to offer on all the cleaners like b12 chemtool, stp and we will clean up the carbon deposits or valve gunk and how to use these products. also fuel additives and direct injection cleaners against carbon deposits as we review all cleaners. like gumout regane direct injection cleaner , royal purple , max clean , max blast , walnut blasting better ? once again great valve cleaner even best valve cleaner watch to find out. diy valve cleaning. or will it destroy your engine? is this the best way to clean your intake valves?