Has anyone SeaFoam on their engine? Does it work well? I was curious if it lived up to the claim or if was just advertising fluff.

Many of the members here has used SeaFoam and it does a remarkable job of cleaning things up.

Choose a small vacuum line by the throttle body. With the car running, suck up about 1/3 of the can into the vacuum line. The car should studder and die out. Dump the rest of the can into your fuel tank. Let the car sit for 15 to 30 minutes before you start it back up. Start it up and let it run until the smoke stops, then take it out for a short hard drive with a few WOT. Change the oil and the filter immediately afterward.

It cleans well, but it is Not a mechanic in a can.

I've used it a few times. It can clear up many problems. But not everything.

Dan uses the stuff in the shower. ;-P

Will it bring back fuel economy? Will the TransTune crisp up a softer shift?

I've never used it in a trans, so I can't say.

It is a cleaner and nothing else. If your mileage is affected by clogged injectors, yes to maybe.

I have never in 40 years of working in cars found a trans fluid conditioner that did anything more than temporarily help a mechanical problem.

The best thing you can do for your trans is drop the pan and drain the oil. Change the filter and fill it back up. If the fluid is dark then do another change of the filter and fluid in a few months. I've heard a few members say they flushed their tranys and had bigger problems shortly after that. So I've never done a flush, just a oil change.

Several members and several friends for me. I also know people that swear by them. All I can make of this is that if your tranny has gone a long time with a fluid/filter change, (like never) the last thing you want is to dislodge things that have found a comfortable place to rest. And a flush is going to do this. If your sluggish tranny is because of a clogged filter , then a dump and change is needed. Dumping conditioners which are really a cleaning/ thinning compound into a tranny to get things moving is only going to compound your problems not far down the road. Mechanics dont come in a can, stay out of that section of the auto parts store, and stop reading labels that have no laws/safegaurds to protect you from false claims.