The Official Oil-Based Rust Prevention System

Most people will never see the underside of your car, but that doesn’t mean it shouldn’t look good too. Besides looking good, it’s important your car’s chassis and undercarriage are well protected from the elements. The sand, salt and moisture the underside of your car has to deal with is much harsher than what the shiny side gets. The destructive force of corrosion is the single greatest threat to your vehicle. It can lead to rapid deterioration of metal, not only resulting in poor appearance and loss of value, but hazardous safety issues as well. Don’t wait until you have a structural failure, or fail a safety inspection. Deal with rust as you would any other maintenance item on the vehicle.  Our products deal with the less than perfect foundations you sometimes have to start with down there. NH Oil Undercoating can keep them looking that way for a long time. Our environmentally friendly oils will displace moisture and cut off the oxygen supply to existing rust.

More cars are destroyed each year by rust than by auto accidents, according to the Automobile Association of America!  Save your vehicle today!

Amount in billions that rust cost consumers in auto repair annually


Percentage of our customers referred by a mechanic

Amount in billions that rust cost consumers in auto accident-related repairs annually

When it comes to rust and corrosion prevention… We’ve got you covered!

All our products offer powerful corrosion protection for all metals and superior lubrication for all moving parts. They are long lasting, and made of the highest quality corrosion preventives and lubricants available on the market today. Thixotropic liquids and gels – some have been used for over 55 years in the highly corrosive marine environment of ships and offshore drilling rigs. More recently they have been introduced and successfully utilized in the lawn & garden, aviation and automobile industries, as well as providing an environmentally friendlier solution for home maintenance. Facilities where they are used include government, commercial fishing, gas companies, farming, salt, power, and industrial plants.

What is a “high salt” diet costing you?

All our specialized products will protect your vehicle against damage caused by salt, liquid de-icing and winter driving conditions. They are designed to penetrate the seams and crevices. It eliminates moisture. It actually terminates rust and corrosion in all metals, it protects vinyl and plastic surfaces from UV rays and improves the function of moving parts through lubrication.

Temperature changes from cold to hot… freezing and thawing is devastating to the seams and spot welds of a vehicle. Trapped moisture freezes and the expansion of the crevice ruptures the paint and creates a cavity that only needs the warm sun to cook the rot. Rust and corrosion undermine the structural integrity and negatively affect the overall appearance of your vehicle and reduce the value and life of the vehicle.

Our Process

We know that you’re curious by now – check out this page to see how it’s all done! You’ll be impressed…

See how it's done

Our Work

Reading about our process is great, but our photo gallery will really give you an idea of the great work our product does. Check it out!

Before & After Photos

Our Products

So if you're the type who likes to get your hands dirty, we've got an online store waiting for you! Buy our product for self-application today!
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NH Oil Undercoating Inc is proud to sponsor Derek Robbie!

Derek’s racing objective is to tackle the highly competitive New England Pro4 Series and look to earn another championship to become the first to have a championship in the Limited Sportmands and Full Pro 4 divisions.

He is the driver of the #27 Pro4 Modified

Check out his website:

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