Originally Posted by
moto-x
Glad to help. Been doing that since the 70s on motorcycle carbs. Just about anything aluminum that has had fuel. And no, It won"t remove carbon but it will loosen it up to scrub off easier.
I have three engines taking a bath right now! I did the 4 stroke and then an old OS 46 FX - both look like they just came out of the box new! Oiled them up and there is tons of compression, everything is smooth - perfect!
I have a couple of really old ones in the bath now, maybe 40 yr old OS MAX 25 and an slightly younger OS 46 SF. Will let them sit and stew overnight and see how they come out.