How to PROPERLY Undercoat A Rusted Car or Truck. (Fluid Film Surface Shield, Woolwax)

Here are the tools that I used in this video: Wire Brushes (small): amzn.to/3sTpNz7 Wire Brushes (large): amzn.to/3HuV8vO Needle Scaler: amzn.to/3Hs1LPI Surface Finisher: amzn.to/3znL3xW Surface Finisher Wire brush: amzn.to/3FUtLuJ Bulk Products: (Compressed air required) Professional Spray Gun: amzn.to/3JITJUo Graphite Powder (Turns clear products black): amzn.to/3mYBzEm Surface Shield: amzn.to/3FYKptw Fluid Film: amzn.to/3qGGXNC Woolwax: amzn.to/3pSJTre Aerosol Products: Spray Can Handles: amzn.to/3F1d93y Inner cavity tool: amzn.to/3NNtZbP Inner cavity Adapter (Surface Shield only): amzn.to/3mYbOEq Surface Shield: amzn.to/3JGW4PO Fluid Film: amzn.to/32OQtX4 Woolwax: amzn.to/3sWTJKt My Amazon Store: www.amazon.com/shop/repairgeek Help support the channel, buy using my Amazon links As an Amazon Associate I earn from qualifying purchases and your cost is exactly the same.

Tip for the DIY guys doing this laying on your back in the driveway: Park your car on a big sheet of plastic. Raise your car up on 4 good jack stands. Tape a plastic skirt around the sides. Weight down the bottom edge of the plastic skirt. Put a fan at one end to draw air through the tunnel you created. Wear a hoodie, old clothes, and some sort of face cover.

If you are using ramps, I've found it easier to ramp up the sides of the vehicles rather than front and back. It helps with better access and more space one side at a time vs front and back.

This is brilliant... I've spend years thinking about this topic and while most of what you instructed is known to me but so much of it is not in my mind. You have pulled it all together and provided examples of success and failure that I've never seen anyone else do. This is THE Best resource on the web.

Thanks for the information, these lanolin and cosmoline products have made a huge difference in the long term quality of my vehicles vs trying to sand and paint everything, and there is a massive time savings. Thanks for spreading the word to help other mechanics.

I learned to do this as an apprentice over in Germany at an Opel dealer. We used to power wash the under side of a car let it dry then put it the paint booth for a few hours @ 130 if I remember correctly. Your video was a great refresher. Good job and great content, thanks!

Of the MANY rust proofing videos I've watched, yours is the best IMO OP.

Gonna be working on my rusty old van, thank you so much for making this video easy to understand for those of us who are new to working on cars. So much of the information out there is geared towards people who already know what theyre doing, what the tools are and all of that.

Great video. I do my vehicles every fall when I swap to snow tires. One thing I like to do is I put plastic garbage bags around the rotors/calipers before I spray so whatever product I'm using doesn't contaminate the brake pads.

As I have stated before. I truly appreciate your continued commitment to stopping rust on our vehicles. I had new rockers and cab corners put on my '03 Silverado last year. They put in a few holes so I can get inside with a wand. I ran the truck up on jack stands and used a hand held wire brush. Eight cans of Wool Wax later and the whole underside was done. Also was able to get the spare tire down for the third time in the life of the truck. Side benefit, Wool Wax lubricated the lowering/lifting mechanism for the spare tire. Believe me it did not want to come down. THANKS AGAIN!!!

Didn't have to watch the entire video and I couldn't have been more happier. Been thinking about how to deal with the minimal rust under my truck and BOOM, this video. Please keep this up!

I had several questions about coating the underbody when I started this video. I no longer have questions. 😁👍If an ignorant guy like me can get familiar with the process after a video, then you did a good job explaining.

I find this video searching for fluid film on YT. I now follow this channel due to the expertise and thorough knowledge shown in this video. Thanks for your help.

Well done dude! I have been in doubt, questioning myself about all the reasons why should I use a Lano product and how...I have researched quite a lot on youtube but your explanatory video was the best I could get hold of. Clear and straight forward! Thanks a lot and well done!

Michigan native here and they salt the roads like mad. I noticed after undercoating (done before winter started) my XJ that salt does not stick at all to the bottom of it, its amazing lmao. will be doing this every year from now on. and if anyone is curious it took me about 3 full cans of the Surface shield aerosol to coat everything on the bottom. thanks for another great video!

One of the (if not THE) best videos on the subject. Very thorough and excellently presented. Awesome stuff :)

Thanks for the video. You made this topic of undercoating crystal clear compared to many other videos and forums I’ve been reading on. I’m going to fluid film my 2009 4Runner and aside from some minor surface rust the frame is in fantastic shape so I want to keep it strong for many years to come. I wanted to make sure I was doing the right thing by using fluid film and not some other rubberized coating or product.

I've been working underneath my 05 f150. A lot of places are full of mud and sand. The front fenders are the worst for collecting crap behind the wheels. I highly recommend hitting the underside of trucks with a pressure washer.

Just recently discovered your channel while searching rust prevention/mitigation strategies. Thank you for these type of videos. I've got a 24 yr old, 270k mile car for my daily that, despite my best efforts, is starting to show some underbody age/surface rust. Gonna be trying to head that garbage off at the pass with some Surface Shield. Thanks again!

Best analysis of how coating work on metal to fight rust. I really enjoyed this . Thank you