At the suggestion of some of you, I've been adding Sea foam religiously at every fill-up.  Any positive results have been marginal at best.  So, just exactly how long am I suppose to continue adding this product?  I've run about 5 tanks of fuel through the system and currently have 2050 miles on the Odo. The only other bit of information that may be helpful is my Suzuki is an 06 S40.

My new Kia manual says every oil change to rune a fuel additive,If your motorcycle is running good just add it every couple month to keep the carb slide and petcock lubed.

What problem are you hoping it will solve? Ive probably run $50.00 worth thru my backhoe, it sounds so much better now I dont know what to say,,my 25 y/o pickup hardly ran on startup, now, it runs without me sittin there trying to keep it going, still surges Some, but not nearly so bad. & I drip a little in other things sometimes now,just to keep things happy,
If it aint messed up, ya cant Fix it.,
& some kinds of messed up, SeaFoam wont touch,

06 with only 2050 miles on it that Seafoam would fix, unless it's been sitting for long periods of time.

2,000 miles in 6 years is the definition of sitting for long periods of time,
Expect it to take a long time to smooth out or go in & clean the carb. Shoulda cleaned the bowl before even starting it. Now, whatever crud has broken loose has been dragged into jets & fuel passages.

Seafoam schmeefoam.  If you have muck in your carb, clean out your carb the right way.  If you have no muck in your carb, use a really good filter, and the solvents in name-brand gas will keep it clean.

Would you perchance be interested in any of these items I have for sale?
-- fuel magnetizers
-- vortex generators for the intake
-- tailgate nets
-- slick 50
I bought several of these over the years.  I believed the facts as stated by the manufacturers.  Had they worked as well as the testing results quoted by the manufacturers, my cars, bikes, and airplanes would have lasted for friggin' ever, and would have been making gas, rather than burning it.  Alas, the manufacturer's claims seem to have been a bit optimistic.  In fact, I had much the same results with these gadgets that I do with low-end solvents like seafoam.

I use SeaFoam. It works for keeping deposits out of my fuel system. I, like others on here have poured a little in rough running engines and seen almost immediate improvement. It won't remove a rock from an idle jet, but it does keep things bright inside, just like good oil does. Many on here complain it doesn't work, then we find out they are expecting unrealistic things and are using it against the instructions on the label. I use it maybe once a month when I remember it. It has worked for me. I am not selling it. Use it or not. Just don't get all tore up 'cause someone does or doesn't. Have you ever seen anyone hold an old truck engine wide open and pour water through the carburetor? I have. They was some major hairballs coming out the exhaust.   I don't recommend it, but it worked. The guy who did it worked on P-47 Jugs in WWII.

I have a friend who was complaining about her Tahoe using too much gas and not starting right up. Her husband was impressed when they walked into a parts store and she asked for SeaFoam. The sales guy was really impressed with her request, so she just acted all cool like it was something she used all the time. Of course it just cleaned her injectors some, but her husband noticed the change and got her to tell where she got the idea. He just laughed when she told him it was me.

I've used a few different kinds but typically I wind up using Marvel Mystery Oil.  I add it to a tankful of gas 4 or 5 times a year.

I added Sea Foam to mine after it was stored in the garage, it runs more smoothly and back fires less