undercoat/rustproofing prices and where to?

[Salanguit]

If you are concerned about corrosion from the scraped under chassis the better option is to coat the area with paraffin. It protects the ferrous surfaces by sealing oxygen off. I personally tested this on steel handsaw blades and left it out in the rain and no visible rusting or staining was evident

:-)) sound like rocket science to em Sir. I assume when you say "ferrous surface", you meant iron or the metal itself? What's paraffin? Nabibili ba to in canister cans?

feeling ko eto yung part na kumayod sa humps eh, tunog bakal kase nung sumabet. Paint ba itong coating nya or special something?