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NHOU undercoating formulas are engineered with highly refined food-grade mineral oil. Made with the environment in mind, NHOU Oil Undercoating is a nonhazardous, unregulated product with no flammability hazards.

Our products contain no solvents and no detergents and our corrosion inhibitors are all green and environmentally friendly. In fact, our undercoating oil has natural corrosion inhibitors known as “green inhibitors”, derived from plants and animal fats. Even the tint in our our black oil undercoating is fully biodegradable.

NHOU formulas are designed to force our moisture and seal off oxygen. When you take either out of the equation, rust simply cannot occur. Every formula we develop is formulated to migrate and creep, which is critically important to to the weakest areas of a vehicle: rocker panels and door panels that are prone to rust. The surfaces are generally unprotected with a finish (paint), prone to hold moisture and are very thin.

Over the course of a warm month, our oil undercoating can migrate as much as seven inches. In a cross member of a pickup truck bed, that would encapsulate the entire inside surface area. Having some surface rust can actually be a plus. Much like using an abrasive to scuff a surface prior to applying a finish, the rust will give the product something to hang on to. When you choose NHOU Advanced Rust Protection, you’re choosing a product that’s purpose-engineered, lab-tested—and proven on tens of thousands of vehicles.

Absolutely not! Because NH Oil Undercoating® is an entirely different approach, it eliminates annoying electrical malfunctions and makes the vehicle work better and last longer. While the manufacturers probably won’t admit it, they just have to love NH Oil Undercoating® because it will reduce the number of corrosion related warranty claims they are obligated to pay. It also saves customers the time and aggravation associated with claims against warranties. NH Oil Undercoating is used and sold by most major manufacturers dealerships.

Check with your dealer, each shop is independently owned and operated. In most cases, if your vehicle arrives with a heavy residue of mud, flaky rust it would be necessary to wash/remove before treatment. We recommend that any heavy accumulation of mud and dirt be pressure washed from the frame and wheel wells a day prior to the application.

Note, arrangements may be necessary to allow adequate time for preparation and additional costs may occur.

NHOU is atomized under high pressure which pushes the product deep into the seams, cracks and crevices where corrosion starts. Once applied, the product removes the moisture in these areas and provides a strong adherence to these surfaces, remaining active with excellent “creeping” and self-healing abilities.

While driving habits may vary, we recommend an annual application in order to maintain adequate protection.