terraclean

Hello friends, A quick question in regards to engine additives im refering to specifically performance related additives such as terraclean and the like. If any of you have used any such products or in fact have indeed had a terraclean service done id love to hear your thoughts.

Sorry if this has been asked already but I was wondering about getting the B Class TerraCleaned - it has about 46k miles on it and one of the lads at work recommended TerraClean (we were talking mpg) as a way of cleaning the engine and maybe even improving the MPG a little in the process...