I was in the local auto parts store early this evening looking for some stuff for a minor invention (more on that in a later thread). While milling about, out from the shelf cries a tin can of Seafoam saying, "Buy me, buy me!". I'd read this post and figured what the hey... So I put a conservative portion of the secret sauce in the tank (Having worked in and around chemicals my entire adult life, my nose tells me this stuff is predominently isopropal alcohol). I slosh it about and head off down the highway. This crap does do something - and it does it quite soon. I noticed an immediate change in roll-on performance in all gears and significantly greater top end response. I somehow doubt this is a permanent result, but rather burning off the iso. Time will tell. Judging by the smell I'm sure that if varnish were a factor, it would indeed melt some away. Anyway, I can attest it does do something.