I've never actually used it, so I'm just speculating.Not in my 2 stroke Merc. What that says, or doesn't, about its use in modern efficient 4 stroke engines I don't know.
Same here, but I hate assuming and speculating. There must be some Independent tests floating around.Seems like snake oil to me.
I take Scotty Kilmer stuff as a grain of salt, but from what he said about it, Seafoam is well designed for 2 stroke engines, but you'd want a nitrogen-based cleaner for a 4 stroke engine:Not in my 2 stroke Merc. What that says, or doesn't, about its use in modern efficient 4 stroke engines I don't know.
Loving it!Did a LOT of good on my 2 smaller diesel tractors. 4 cyl 25ish hp. I have to run that crap ethanol gas here in NY so I add a mix of sea foam, Marvel's, and Lucas top end (8 oz. total) per full up. Otherwise things start to run like crap. I'm pretty sure I get a few oz. of water with the fill up too. Every honest station admits to water in their main tanks. It does help with this gas, tho I think take out the ethanol and I wouldn't need the option any more.