If there is one thing that's as timeless as bad driving, it's peoples compulsion to put snake oils in their engine.
I have never heard anything bad about Seafoam or Techron, most seem to agree that they are good products. Do you have information to add? Experience?
There could be a few uses that it is right for, but the things most people use it for is not within its capabilities - or hopefully not. I will explain
A common usage of the chemical is a fuel system cleaner. Unfortunately though, once there has been significant build up on injectors, it takes a very strong concentration of a cleaner to make any reduction in the deposits (and even this often isn't enough). Systems that are used by mechanics and dealerships run the car on a very strong concentration of injector cleaner for this reason when doing fuel system cleaners. Even if sea foam was capable of cleaning the fuel system, a small bottle in a 70+ litre tank is not enough to make a difference.
Another use people attempt to use this product for is cleaning out carbon deposits inside the engine. This is certainly a situation that I hope it doesn't do as it claims, as it's an outstanding way to get carbon stuck in the valve seat which will result a burned valve.
Ok, so you've never used Techron, Seafoam or any fuel injector cleaner and therefore feel that it doesn't work.
So, do you think that all the people saying it seems to work great are lying? If you read the instructions on a bottle of Techron you'd see that you are to add it to less than 1/4 tank of gas so your concentration theory doesn't fly.
Give Seafoam a Google, seems everybody loves the stuff, nobody mentions burnt valves, usually just better running and cleaner engines.
Most car manufacturers have a similar product to Seafoam, are these all snake oil too in your opinion?
I know there's junk out there on the market, but these two products seem to be ones that work.
