Why Ram Truck owners insist on undercoating and rustproofing their trucks

The discussion among Ram truck owners started when an owner named Reek asked the question “How much rust do you have under your truck?” Reek has a 2015 Ram and says “Just curious. I was taking pics of my rear spring mounts for another reason. I can't get over how much rust there is, surface stuff but a lot. Its a 2015. I don't remember my 2014 having much at all.” And with that the forum boards lit up with other truck owners comparing notes. Reek was from Sacramento, which seems odd. That isn’t where you usually think of heavy weather.

Another owner of a 1500 Rebel responded that rust on the undercarriage was “Unfortunately, pretty typical”.

Why have trucks undercoated
The truck owners then starting explaining why they shell out the money every year to have their trucks undercoated. “That looks about right. I had the same amount of rust the first year with my Jeep. I learned from that and fluid filmed my RAM and so far is holding up well.”

There are multiple forums about “what is the best spray to stop rust under the truck?”The answers range from the tried-and-true Ziebart, to more do-it-yourself sprays that you can buy by the gallon and apply at home.

The owner of a 2016 Ecodiesel says “I have been using fluid film for several years on at least 4 different vehicles. I spray it myself. It's not magic like many people claim, and it doesn't last forever underneath where the spray from the road can hit it. But, it works pretty well, doesn't smell like gear oil, doesn't drip, and it's a good lubricant for things like your door hinges. I try to spray it on when the weather is hot because it will "creep". And then I'll spray it again right before the snow starts. I like it, and it costs about $50 for a gallon. A gallon will thoroughly coat your truck 3 or 4 times. I use the fluid film brand sprayer that I bought for $35 I think, and I put a little pressure regulator on it. It's a pretty good setup.”

The owner of a Ram 1500 named Terra recommends a product that he says is military strength.” Corrosion Free, Great product used by US and Canadian Military.”Terra is from Ontario, Canada, and they get serious winter weather. A truck owner named Greg from North Carolina added “I have a friend that just used this stuff to coat the underside of his truck. www.kbs-coatings.com. “

The problem isn’t limited to Ram trucks, one guy who drives a 2014 Laramie says “I get my truck sprayed with Krown. No rust here. Been doing that with all my vehicles for years. If you want to see rust issues, there are many threads about GM trucks rusting frames while still sitting on the dealer lots. Not bashing GM here, I have just seen a LOT of complaints about rust under their trucks.”

Torque News reporter Marc Stern warns that the vehicle must be properly prepared for the undercoating to work, if not the coating can do more harm than good. Stern says " I followed them closely and they seemed great. That is until they started to be applied poorly because the vehicles were never prepared right. Vehicles have to be super clean and super dry before you can even think of putting that junk on there. All that happens is if there is any moisture, the moisture is trapped and it begins to eat away at the metal, after it has a nice dinner on the clearcoat, cover coats, primer, electrophoeretic paint and then yum, the bare metal."

The most interesting thing about the different answers is that they came from all over the United States and Canada. We usually think of rust occurring in the heavy weather climates, but drivers from Pennsylvania, Ohio, Texas, North Carolina, Florida and California are having similar issues and concerns. When you are spending $40,000+ to buy any vehicle, you want it to last!