I know this is a topic with a lot of strong opinions, so I waited many months to get up the courage to post. After TONS of research, I decided to rust proof the entire underside of my brand new Rubicon last October (before the snow and road salt ruined its destiny). I spent a full week on a creeper seat while wearing a headband flashlight, paint goggles, a respirator and a hoodie that I knew would get thrown away when done. I sprayed a ton of Eastwood Internal Frame Coat inside all of the frame components and inside my new tube steps using a 30-inch wand. Then I put ten cans of Eastwood Anti-Rust just about everywhere else (except exhaust and brakes, of course). This product is primarily wax and carbon black, as far as I can tell. Critics say it doesn't last forever, fans say it lasts plenty long and is soft enough to work its way into seams and cracks. Then I sprayed Fluid Film inside the doors and front body panels with the wand, and put another coat of Fluid Film on the suspension, all exposed bolts and other raw metal components (like the mount for my hi-lift jack).
Several months later, I am very happy with the result. Mud and grit seem to bead right off the wax layer, even in hotter weather. I also spray Fluid Film on small metal components and bolts every few weeks, just as a habit.
Like I said, I know everyone has strong opinions about rust proofing, so I'm fully prepared for the risk that some experts think I have wasted time, wasted money or ruined my Jeep. But I have learned a LOT from others on the BSJ forum, so I wanted to share my experiences with these rust proofing products and answer any questions that other curious members might have!
Photos are here:
