Inside-the-frame cleaning · trucks, SUVs and cars
Frame Flushing
Salt, sand and road brine pack inside your frame rails, where no car wash can reach, and hold moisture against the metal. We flush the rails clean from the inside so your frame can dry and your undercoating can reach the metal.
Call for pricing: 1-855-OIL-RUST
Why it matters
Rust starts inside the frame
Boxed frame rails and crossmembers pull in salty slush, sand and loose scale through their drain and access holes. That packed debris stays wet for days and keeps corroding the frame from the inside, out of sight, until the damage shows.
Frame flushing feeds a high-pressure jetting hose into each rail. It sprays forward and backward at the same time as it's pulled out, washing the rail along its full length. A clean, dry rail lets NHOU® undercoating creep into the seams instead of sealing over dirt.
Best with BOSS Wax® or Hybrid: Frame Flushing is available on its own, but most customers book it with a wax service. We flush the frame, let it dry overnight, then apply the wax.
How it works
Flush, drain, protect
Flush the rails
A jetting hose goes into each frame rail through its access holes and sprays high-pressure water both ways, washing out salt, sand, mud and loose scale.
Drain and dry
The rails drain and dry before anything goes on. Before BOSS Wax® or Hybrid, the frame dries overnight so no moisture is sealed under the wax.
Protect from the inside
With the rails clean, NHOU® undercoating reaches inside the frame and creeps into seams and spot welds. Heavily rusted frames may need Rustoration® first.
Questions
Frame Flushing FAQ
Can't I just rinse my frame with a garden hose?
A garden hose only reaches a few inches into the rail. Our jetting hose travels the full length of the frame and sprays in both directions, so it reaches debris packed deep inside.
Won't water left inside the frame cause rust?
Clean water drains and dries, while salty sludge holds moisture against the metal for days. We let the rails drain and dry before undercoating, and NHOU® oil coatings push remaining moisture away from the metal.
How often should my frame be flushed?
Most customers have it done before a BOSS Wax® or Hybrid application, or after a hard winter or off-road use. Not sure? Give us a call.
How long does it take, and what does it cost?
Pricing depends on your vehicle. Call 1-855-OIL-RUST or book online and we'll go over it with you. You can book it on its own or with BOSS Wax® or Hybrid.
Flush out the winter
Get the salt and sand out of your frame before it does more damage. Book online or call to schedule.