Heck....I'm impressed!!!!!(Seafoam)
 

Yeah, I just did the Maxima and the Accord and both are smooth as silk now. My Accord was running pretty rough and the Max has a ton of miles on her (145000). I've seen what my manifold looked like when I took it off so I can imagine what my pistons and valves look.
I used a 1/2 can for each car and took my time. The Honda did throw a code but that wasn't anything the Equuis could clear up. I'd like to see how the ECU adjusts to having the engine free of the carbon and crap that was inside.

Well, I'm taking the kids out for a drive to see how the Max runs on the highway.

Later.

I used that stuff as well but noticed no difference after a few hundred miles. Next thing I did is pour a few spoons of ATF into each spark plug hole and let the car idle for a few minutes. It smoked the whole neighborhood and worked well. Another thing I plan on doing before the next oil change is run 1/2 bottle of ATF and 1/2 bottle of water through the IACV hose.

I wonder if this stuff is removing the crap out of the EGR? The EGR is probably one of the most filthy components on the engine besides the manifold.

Guys, I will be putting some of this stuff in my system real soon, I got a few questions. I will add about half the bottle to the fuel tank, but should the tank be full or empty and should I replace my fuel filter after that. They I will put hte other half into my oil. I will drive for about 75-100 miles and change it out. However when I run it through my brake booster will I also need to change the oil after that or will I be ok and how much of hte bottle should I run through the brake booster and where else can I run this stuff through?

When you use the brake booster vacuum hose, it goes directly into the manifold in which it will get to all of the cylinders. Just take your time and not pour it into the hose. The suction is strong enough to suck it right of whatever you use.

When you put it into the oil, drive for about 500 miles before you change the oil. The guys at Napa said this is what they do.

500 is too much. 100 is perfect. What about hte gas tank, how much gas should there be? Also should I use the whole bottle for brake booster?

1) Use it on a full tank if possible
2) If you use that huge brake booster hose, BE CAREFULL that you don't draw in too much. If you can find a brass barbed fitting that necks the opening down to about 1/8" or smaller, that would be much safer. Hoe Depot has a big assortment of these

Ha!!!! Of what? Hoes?

Get 2 cans. When your tank is near empty, pour in a whole can in the tank and fill it up all the way. Pour 1/2 a can into the oil and let 1/2 can get sucked into the brake booster hose http://forums.maxima.org/showthread.php?t=308576

I haven't read the can but I don't think it states to put it in the gas tank when it's nearly empty

I think that just helps it mix better if you put it in before you refill.