I started using it on my vehicles about 4 years ago, not religiously, but before big trips or when I first get them(always buy Used for the time being) and out of all of them, I have seen some sort of increase in performance, whether it's throttle response, MPG, or even just the idle. It's a cleaner and I like it. Haven't had a single issue with using it on Pontiacs, Fords or the new to me Dodge. Some of the increases were very minimal, but the most drastic was in the Ford, where I was able to start getting 22MPG on the highway, from starting off with 16-17 tops.

It all comes down to how the user actually used the seafoam, not how he says they did and condition of the vehicle it's being used on. I guess my vehicles were in need of some type of cleansing to be able to see any gains.

 

I sold seafoam nearly every day in 3 years working at advance...never heard any reported problems although I do believe most people were running it in their gas. Putting it in the vacuum line is something different entirely, although I've done both on my truck. I've even poured some in the crankcase before an oil change. (not in my truck but in my old jeep) Never any negative effects although I'm not sure if there was any positive changes either. It def depends on the condition of the engine and the overall maintenance the car received throughout it's life. I'm def not nervous about using it, although I can see how putting it in engine oil can be a bad idea.

 

This post made me

I've only used Seafoam on small engines, not my truck. I just don't feel that it needs it, but I wouldn't stop someone from using it on their own vehicle. My Dad uses it religiously in his Jeep and hasn't had any issues.

 

I used it once. Not sure how much impact it had.

I would almost buy it just to drive through town leaving a giant cloud of white smoke everywhere

 

I say nay. If you don't need it don't do it. Leave it for the marine guys.

 

I use it with no problems. Most of the time just pour in the gas tank to help clean injectors. Every once in a while I'll pour about 1/4 can into the the vacuum hose that goes to the brake booster while the truck is at idle. I've read that this cleans carbon off the piston heads and cylinders. Last time I did this it actually cleared a check engine light. Years ago I put seafoam in the gastank of my motorcycle and it would run like a raped ape. I believe in it and will continue to use this great product.

 

Really could you not think of better words to describe this!!!!!!

 

I've used Seafoam in my Ram right when it hit 100k miles. It seemed to gain a little more throttle response, but that's about it. I poured 1/3rd can in the gas, 1/3rd in the vacuum line, and 1/3rd in the crankcase. No negative effects. My brother used to work at O'Reilly's and he says it sold like crazy, he swears by it as well. I've never heard of anyone having negative effects.

 

Generally the expression is "raped ape".....

 

I'm also a little curious about seafoam as well. If putting it in the gas tank how much should be used and how full should my tank be? And should I let it idle or actually drive it around? (just really don't wanna screw anything up as I'm still in high school and dad isn't always easy to deal with lol)