This video I Seafoam my 2005 Forester XT turbo and show what to do if you get a check engine light when doing this.
Here is the Seafoam: http://amzn.to/2rwjRJB
Here is a ODB reader that I use: http://amzn.to/2sPy7kJ
You can use the reader via bluetooth and delete codes
Check out every product that I review or I recommend in my videos here on amazon: https://www.amazon.com/shop/jrobling