Hey everyone, I have a 2014 Forester XT, and I've had to bring it in to Morrie's 3 times, because I kept getting a check engine light that was coming on. It was throwing the P300 (can't remember the exact number) code for random misfire. Finally, they told me that they needed to do a top engine cleaning, because it was building up too much carbon because the DIT's are notorious for that. Ended up being $149 for that to be done. I run Costco 92 through it, because it's a detergent gas. I was told by the dealer that I should run non-oxygenated gas through it once in a while, because it helps with carbon buildup? I'm not sure how I feel about that. Any thoughts? They also suggested that I have the top engine cleaning done every 30K miles...Seems excessive. Would running seafoam through it achieve the same effect? Has anyone else been running into this same issue?