has anyone tried this?
 

just what the title says. https://www.thegassecret.com/?gclid=C...FQqgYgodoz85Eg I'm a bit skeptical myself.

Meh acetone or seafoam in a bottle.

Well, they use a Fox news special to show their credibility... that's almost as good as a testimonial by the Alligator Boy or Bigfoot.

What is seafoam?

A combustion chamber cleaner.

https://en.wikipedia.org/wiki/Seafoam

ha. I had a feeling it's just another gimmick.

Hmmm.... thanks for the link.

Now if you had a 3rd hand Subaru with a questionable (non-existent probably) maintenance history would that be worth a shot?

sea foam works. its just a cleaner. i use it through the brake booster to clean out the intake manifold. it helps smooth the idle and give back 1/3 of a mpg.

with my wifes old car (92 mitsu. galant) half a bottle of sea foam saved it a trip to the mechanic to diagnose stalling and a bad idle.

Seafoam
 

Just do a search on Seafoam here...

I can attest that it significantly cleans-out the gunk and carbon from the engine's top-end. It's a yearly tradition to smoke-up the neighborhood with a good old-fashioned Seafoamin'

Also, my folks have a '93 Chevy Truck that overheated and cracked the rad. It wouldn't turn over, so it was figured to have a trashed engine. Upon recommendation of a certain family member ;) Seafoam was dumped directly into the cylinders by removing the spark plugs.

After sitting for a few hours, the plugs were replaced and it started up and ran smoothly. The stuff works great as a maintenance item or to free up sticky engine parts. Using it to improve FE as an additive, has yet to be proven as statistically significant.

-RH77

I'd do it, another good trick is slowly, as in very slowly, use water instead of seafoam to steam clean the head. Not as big of a smoke cloud but still effective

yea i would just empty a spray bottle at the throttle body as i opened it by hand. i never knew how well it worked though.... seafoam definitely worked by cleaning out the intake side of the head and manifold.