Vehicle Rust Prevention-Merrill Axle and Wheel Service

Vehicle Rust Prevention (NH Oil Undercoating)

Rust doesn’t just affect how your vehicle looks — it affects how it holds together over time. In the Midwest, road salt and moisture can start corrosion quickly, especially in frames, seams, and hard-to-reach areas.

At Merrill Axle & Wheel Service, we offer professional rust prevention using NH Oil Undercoating (NHOU) — a proven oil-based treatment designed to penetrate, protect, and stop rust from spreading.

Unlike traditional hard undercoatings that can crack and trap moisture, NHOU works differently. It creeps into seams, displaces moisture, and forms a flexible, self-healing barrier that continues protecting your vehicle long after application.

Why NH Oil Undercoating Works

• Penetrates deep into seams and crevices where rust starts
• Displaces moisture and blocks oxygen to stop corrosion
• Does not crack or trap moisture like rubberized coatings
• Protects frames, body panels, brake lines, and components
• Extends the life of your vehicle in harsh conditions

NHOU is designed to protect everything from new vehicles to heavily used trucks and trailers, helping prevent costly rust damage before it starts — or slowing it down if it already has.

Built for Real-World Conditions

Today’s road treatments are more aggressive than ever, and factory coatings alone aren’t enough. NHOU provides an added layer of protection that reaches the areas most coatings miss — inside frames, seams, and hidden cavities.

If you want your vehicle to last in Iowa conditions, rust prevention isn’t optional — it’s essential.