I found something at Advanced Auto called Right Stuff. It looks like green koolaid. I pulled my front suspension apart and while it was out I cleaned the grease and dirt with a power washer. I then sprayed this stuff on it and let it sit over night. The next morning the metal was smooth and almost a gloss black. There wasn't alot of rust there to start off with but a 30 year old i beam has a little. I wasn't worried about them rusting through but I thought that they would look better not rust red. I was very pleased. The felt like they were new. No pits and they looked real good. The best part is the stuff cost 4.98 per quart. Now, everthing that I see that has rust starting or developed I spray with this stuff. I will go back and repair the serious stuff latter but I feel like at least the rust has stopped where I spray it for now.