All bicycles with metal frames will rust in the future, but there are still things you can do to prevent rust on your brand new bike. Two places we’ll want to protect the most are the inside of the frame and the exterior of it. For the exterior you’re going to need a silicone based polish. You can get them at bike stores or even boat stores. Simply squirt it on the rag and rub it on to the bike. There’s no need to clean the bike afterwards, in fact that would make it less effective. What this product does besides making your new bike shine is repels water. It will get in the pours of the steel so water and oxygen are kept out. This in turn stops the rust from oxidizing and turning in to what we all hate; iron oxide or as you may know it, rust.
This video describes how to protect your bicycle from rust
The inside of the frame obviously can’t be whipped down, but is still susceptible to rust. For this we have a spray called Frame Saver. Do apply just spray the can in to any vent holes in the frame, usually they’re found under or near the seat. This spray creates a coding over the inside of the frame to protect it from rust and should be used on all new bikes before they’re ridden. These are very simple and easy methods that will greatly extend your bikes life and stop rust from forming for a long time.