Dee-Zol Plus Winter Treatment for Diesel Fuel

Complete Diesel Fuel Treatment with Built-In Winter Protection

Dee-Zol Plus is a commercial-grade, all-purpose diesel fuel treatment formulated to improve fuel quality, restore engine performance, and protect diesel fuel systems throughout the year—including during cold-weather operation.

Building on the proven performance of Dee-Zol Concentrate, Dee-Zol Plus combines advanced fuel detergency, cetane improvement, water control, lubrication enhancement, fuel stabilization, and cold-flow protection into one balanced formulation for year-round diesel fuel care.

Suitable for all grades of diesel fuel, including ultra-low sulfur diesel (ULSD) and biodiesel blends up to B20.

Cleans and Restores Fuel System Performance

Dee-Zol Plus features advanced detergent technology that helps remove deposits from fuel injectors, combustion chambers, and other critical fuel system components.

Cleaner fuel systems promote improved fuel atomization, more complete combustion, smoother engine operation, and restored performance.

Improves Combustion and Fuel Quality

Its balanced formulation also includes:

• Advanced fuel system detergents
• Cetane improver
• Water-control technology
• Lubricity improver
• Fuel stabilizer
• Integrated anti-gel protection

Together, these technologies help improve combustion quality, maintain cleaner fuel systems, protect modern diesel fuel injection equipment, and preserve fuel quality during storage.

Built-In Cold Weather Protection

Unlike standard multifunction diesel treatments, Dee-Zol Plus incorporates polymer-based anti-gel technology to improve cold-weather fuel operability.

The anti-gel component helps modify wax crystal formation as diesel fuel cools, reducing the likelihood of filter plugging and helping lower the Cold Filter Plugging Point (CFPP) by approximately 5–10°F, depending on the fuel and operating conditions.

This provides valuable cold-weather protection while eliminating the need to add a separate anti-gel treatment during moderate winter conditions.