Before I ask the question im going to give you some specifics. I have a 2012 honda pilot, i have had loads of work done to it in the last year. Some i did myself, other the shop. 

I have a basic scan tool, maddox mr10. Just getting started and learning something i enjoy ill say. To the point, my long and short term fuel trims on bank 2 are running at low negatives. ( -12- -15%). I have pulled the data on my MAF seems normal. I go to my misfire data, all 3 cylinders have a low number of misfires. Cylinder 6 being highest. When i say low im saying maybe 30-40 misfires. No CEL. 

I take it to the shop, he looks at it. Tells me hes going to have to do more research on the cause. Most seems normal. He recommended i run a good cleaner through it. Which i already do including top tier gas. He recommended chevron techron every 4-5 fill ups. That doesnt line up with the instructions. Whats your take? I dont want to stress my seals, dilute my oil too much or what not. Whats your take? Thank you for taking the time to read this. Hope you had a merry christmas.