Best Gas Fuel System Cleaner / Additive

[Bucketlist]

Curious on what everyone's opinions are on use of Fuel System Cleaner additives for a 6.2 Gas Engine? I usually buy Costco premium 90% of time and cheat with regular 10% of time.

And what brand is preferred: Seafoam, Techron, Gumout, etc. ?

 

[Ultra...Good]

Use it about every other oil change.

 

[lbhsbz]

Nothing.

I've put north of 300K miles on plenty of engines with nothing added to the fuel. Don't waste your money

 

[Jay Dub]

I use the Lucas fuel conditioner in our boats and vehicles. I feel they run smoother afterwards. But, that might be a placebo effect.

 

[Orange Juice]

Lucas or STP.

 

[Aqualung]

Lucas.

 

[Havasu blue label]

Lucas

 

[HPBoats83]

I use Seafoam in my portable generator and it's done a decent job. Towards the end of the season I fill the boat with non-ethanol fuel and haven't really had an issue that way, I've run Sta-bil in my boat before when I stored it and that worked well.

 

[Bucketlist]

thank you all for your reples!