Never tried SeaFoam as a combustion chamber cleaner, I always used the MOPAR aerosol. But as a fuel stabilizer it can't be beat. I went through bottles of Sta-Bil until I wised up and went to SeaFoam. Just my twocents, your experience may be different. And yes, I've heard all the stories about, "you just have to use the marine Sta-Bil and it works great".

"We live in a time when intelligent people are being silenced so that stupid people won't be offended".