Top end cleaner that actually works
 

Does anyone know of a top end cleaner for GDI engines that actually works?
I bought a 2015 Silverado 1500 a couple of months ago and it's starting to idle a little rough. There are no codes for misfire, so I believe it is just carbon deposits in the intake manifold and valve pockets causing it. I tried Seafoam and have not noticed a difference. It does have 98K on it, so maybe it needs a set of plugs?

Re: Top end cleaner that actually works
 

If Seafoam didn't help I would probably try this in the link below.
Link: https://www.amazon.com/CRC-05319-Int...63267395&psc=1

I have used Seafoam, and it helped several times.

Did you use the Motor treatment in the link Below?
Link: https://www.autozone.com/diy/perform...tment-used-for

The old Fuel injector cleaner that seafoam had was (NO Good)

Looks like the they have changed the label on the bottle.Link below.

Link: https://www.acehardware.com/departme...eaners/8038177

Lucas Fuel cleaner does not work well IMHO.
Side Note: Lucas oil Treatment is top Notch

Re: Top end cleaner that actually works
 

I used the stuff in the metal can in your second link.

Re: Top end cleaner that actually works
 

That stuff in the 2nd link is pretty good.

I have not used the CRC stuff in the first link.

Every product I have used of CRC's is Top Notch.

There are U tube video's on using this.

Re: Top end cleaner that actually works
 

Here's a Video from CRC.