So I used Seafoam first time in my 09 Corolla S at 32k miles and felt like new again. I used it before on an older car and had great results. Never thought that on a new car it will make a difference. Feels that I got all the power back like when it was new. Also it shakes less at the steering wheel. I just put some in the gas tank as the instructions said and very little in the crankcase. Drove it about 50 miles then took it in for an oil change. I felt it better since the first few miles (<10) before oil change. Then after the oil change I checked the dip stick as I always do to make sure they changed the oil and looked cleaner than my last oil change. So great product. Maybe ill try putting some next time in the manifold vacuum line to see if it makes a difference. For now it feels perfect