Trust me one this, and i mean everyone. I have used seafoam and techron and 3 or 4 other injector cleaners, stabilizers etc. Never noticed the slightest difference. Someone at the Tbird forum told me about Liqui Moly Jectron injector cleaner and i tried it. I kid you not, within a 1/4 to a 1/2 tank of running this stuff my Tbird with 70+k on it started running like someone uncorked the thing. Power literally felt like it gained 10HP. Not saying it did, but thats what it felt like. Bike sounded better, less mechanical noise and the bike just felt tight and crisp like it hasn't in years. By the time the tank was done it was even better. Ran the other 1/2 of the bottle in the next tank and i don't think it needed it as a 1/2 bottle in one tank seemed to clean the injectors fully. I've never experienced anything like that from any additive and never realized how dirty injectors can get or how much performance can suffer. Even the knocking my bike has been plagued with like many other Tbird owners has happened less often since using this stuff. That was maybe 4-6 months ago, and i ran another tank full just recently with similar result. I'm going to use it as maintenance every maybe 10 tanks. I get it for about $6-7 shipped and one bottle does 2 tanks. So it's cheap too. (can be double the $ tho depending on where u get it)
I don't work for the company or have any interest in it, i was just so thrilled with the stuff when i saw this thread i had to chime in. Just try it, especially those with some mileage. I seemed to notice somewhere around 30-40k my bike seemed as tho it wasn't as strong as usual and i bet thats when the injectors needed cleaning. I tried a few things like i mentioned earlier but they were all a waste of $. Wish i knew about this stuff then ! I only tried this because someone who's opinion i respect a lot assured me how good it was. Glad i tried one more product because had it been most anyone else i would have probably passed given how useless i found all the past stuff i tried was.