I keep my stainless steel tips clean with:
http://www.autowerkesexclusive.com/p...oap/index.html
Great stuff, you just need a very little amount. No messy steel wool or greasy pastes. It foams up and you just use the included sponge. Rinse off and you're done. I don't seal it with anything atm, but when you finish cleaning with the p21s soap, the water beads like crazy off it.
EDIT: it can be used for Ti, but you cannot use it on clear coated, painted, or anodized surfaces.