Thanks for the reply. Since there is no fuel spraying on the valves any fuel treatments would be a mute point (I guess)... how are the valves being cleaned or this condition corrected?Mostly 1.5 with 20k. It’s south Florida so hot all the time minus the three days it’s cold during the year. I’ve even seen it on a fit with direct injection. No fuel spraying on the valve to keep them clean. I’m guess not much on the 2.0 since they’re not driven as nicely lol.