Read your factory shop manual on how to clean your injectors. Look at the information on the pintle holes. If you ever clean a pintle hole you will see that it is impossible for any chemical that you add to your fuel to clean your injectors. You could soak the pintle in straight purge or seafoam and it will not clean the carbon out of your injector holes.

There are a variety of chemicals that you can add to your fuel for a boost in performance. Once the chemicals are burned you are back to where you started.

Spend your money on cleaning your injectors the way that Mercedes and Bosch tell you to do in the manual.

Some people say their car runs better when they drink Jack Daniels, I don't recommend this approach either.