I still have a can of that @ home…. I still haven’t used it because my valves are pretty damn clean, I’ve been running the 91 octane tune from BB performance with nothing but Chevron, Shell or 76 gas filled in the tank since 6,000mi… I’m at 43k and the truck runs amazing still.
keeping up with your oil changes and using 100% synthetic will help too.
I’ve heard that stuff works pretty also so
Go ahead and use it and you will most likely notice a difference.
Normally I don't use any intake valve cleaner in my other cars since it's not DI. The Tahoe being a DI engine the better quality gas and better oil is not going to help the intake valves; there is no gas being sprayed on them like a traditional FI engine. Well maybe the better oil would not cake up as much? Not sure on that but the gas definitely doesn't hit the intake valves.
From my understanding the PCV system lets oil mist into the intake, and that oil is what starts to gum up the intake valves. With no gas to spray them clean, that oil just keeps caking on. So that's why I did the CRC cleaner and I also installed a catch can to prevent more buildup.
There were several options to apply this solvent, but in my thnking using the PVC return on the intake made the most sense. This is that path that the source of the junk is coming in so I figure the solvent following that path would make the most sense.
Tahoe was running fine prior, I was just wondering if anyone ever pulled an intake and checked out their valves on a truck with 100k+ miles and see what they looked like?
