Pull the seatpost and hang the bike upside down at various angles to drain any water that may be inside. If you have the tools, you may also pull the crank/BB to check for rust. Grease the seatpost and BB threads liberally before reinstallation.
Internal rust is usually more of a theoretical concern than a real-world problem. A thin film of rust on the inside of your frame is normal and doesn't mean your frame is going to die at an early age. Thick rust deposits around the BB are usually a sign of longterm neglect of basic maintenance, but are probably treatable. I don't generally bother with frame saver on my own bikes because it adds too much weight, but I usually pre-emptively address potential customer panic by fogging every frame/bike we sell. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/Hi3Ij4XW9PAJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.