I have been dealing with an issue of my 2011 Cadillac CTS4 idling seeming to be a tad off. Overall the engine seems to run pretty well so a couple of friends of mine have suggested going with something like Chevron Techron Entire Fuel System Cleaner and put it in when I fill up next time and see if that helps.
Do those “cleaners” really do anything? With having a 2011 Cadillac with the 3.0 engine would it be better to say use Premium gas for the next few fill ups and such or what might be other options? I had the spark plugs and coils replaced back in late November and had them also do a throttle body cleaning at the same time. My engine when warm idles around 500-600 rpm and my oil PSI gauge runs around 25 psi wavering on both sides.
Overall the car runs well just seems to be a tad off when fully warmed up and sitting say at a stop light or such.