The air force did experiments after WWII with emulsifying water and aviation fuel. Just like water injection but without the need for a second fluid delivery system. You can add water up to almost the point of hydraulic lock and the motor would run fine. Most of the water was treated with methyl or ethyl alcohol to keep it from freezing. For the emulsified experiments they used detergent to keep the water and fuel from separating. They also ran it through a machine not unlike what they use to homogenize milk to force the oil and water into very small droplets. They could never get the mix to be stable enough to justify ditching the conventional water injection system though. So basically gasoline, Tide, and alcohol...
95 ZJ 5.2 w/ 225K miles I just did the Seafoam series - without the crankcase section. Put 1 can in gas tank, used 1/4 can throttle body cleaner spray and put about 1/2 of a Seafoam can in the brake booster hose slowly with engine running and poured 1/4 can down the air intake with engine off and wings held open. Left that in overnight. Started next morning with a little hesitation catching, but billowed out much smoke for 5-10 minutes then began running stronger than ever. I took it for a drive and the improvement in throttle response/pick up, top end power etc. was very noticeable. Zoomed up on ramp to freeway and zipped past other cars like i have not seen before.
I respect those who have opinions that this stuff may be harmful, but I took a chance and so far so good. I am going to check mileage at next gas fill up and consider using Seafoam in oil before next oil change.
I cannot say that I would do this often, but I did it once and will most likely go back to routine of putting in an occasional bottle of Lucas gas treatment and/or Marvel Mystery oil to keep things clean
If you have a look at the MSDS for seafoam, there's not a lot fancy in there - you could make it up in the garage. I use Redline SI-1 fuel system cleaner, works a treat and has a very good (30-50) percentage content of Polyether Amine - which actually does the cleaning.
After plenty of reading about Seafoam on this forum I added it to my full tank and my 5.2l throttle body. When I poured the final 3rd to stall the motor per instruction a coolant leak sprang in the area where the radiator hose meets the top of the motor. I hope its not the fuel pump leaking, but how would seafoam in the throttle body cause this?