I am looking for a good Complete Fuel System Cleaner for a high mileage engine. After reading many many threads on Fuel Cleaners it is clear that these 5 are the most popular. I need help deciding on which one to choose. I am looking for the best COMPLETE Fuel System Cleaner that is safe(Cleans and Lubricates), will not contaminate my oil and will not break my wallet(RedLine and Techron I can get locally). Please tell me which one of these bests fit this and why you think it is the best product. Thanks for all your guys help.