Diesel Fuel Additive Biocide & Lubricity Treatment - 32 oz

In this review the reviewer looks at a diesel fuel additive designed to both kill microbes and restore lubricity in modern diesel fuels. The bottom line: this product is aimed at owners of long-term fuel storage, fleets, generators and diesel equipment who need a proven biocide that also protects injectors and fuel pumps. It stands out because of its dual phase chemistry that treats both water and fuel layers, providing complete microbial control and helping prevent corrosion that can lead to clogged filters and expensive repairs.

Key Features

• KILLS & PREVENTS BACTERIA: Effectively eliminates bacterial and fungal growth in fuel and tanks to reduce biomass and related problems.
• DUAL PHASE CHEMISTRY: Partitions into both water and fuel phases so it treats microbes wherever they reside for more complete protection.
• PREVENTS CORROSION: Stops acidic by-products of microbial growth from corroding metal tank components, extending tank life.
• EXTENDS FUEL FILTER LIFE: Reduces sludge accumulation and filter clogging, cutting maintenance and downtime for engines and generators.
• INCREASES LUBRICITY: Restores lubricity lost in ultra low sulfur diesel (ULSD), protecting injectors and fuel pumps from premature wear.
• OEM APPROVED TESTING: Proven to restore lubricity levels to meet industry testing standards, giving confidence for engine protection.

Who It's For

This product is a practical choice for commercial fleets, farm equipment owners, marine operators and anyone who stores diesel for long periods or operates critical standby generators. It is especially useful where water contamination or cyclical condensation promotes microbial growth and where maintaining filter life and injector condition is a priority.

Those who should look elsewhere are casual short-trip drivers who regularly refuel and rarely store diesel for long periods, since the primary benefits are for storage protection, biocide action and lubricity restoration rather than day-to-day fuel polishing.

Pros & Cons

Pros

• Addresses both fuel and water phases for comprehensive microbial control and reduced contamination risk.
• Helps extend fuel filter life and reduces the need for frequent polishing or filter replacement.
• Restores lubricity to protect injectors and fuel pumps, backed by industry standard testing.
• Long track record as a standard treatment, giving assurance for critical applications.

Cons

• Not intended for users who do not store fuel or who never experience microbial contamination, so benefits may be unnecessary for some owners.
• Requires correct dosing and handling like any concentrated additive; users must follow instructions for safe and effective use.

Specifications

Product type	Diesel fuel biocide and lubricity additive
Volume	32 oz bottle
Chemistry	Dual phase (partitions to water and fuel)
Primary functions	Microbial control, corrosion prevention, lubricity restoration
Industry approval	Proven to meet ASTM lubricity testing standards
Typical users	Fleets, generators, stored fuel systems, marine and agricultural diesel

Our Verdict

For anyone responsible for stored diesel or critical diesel-powered equipment, this additive is a sensible investment because it combines effective microbial control with lubricity restoration and corrosion prevention. Its dual phase chemistry and industry-proven lubricity performance make it good value for reducing filter changes and protecting fuel system components over time.

Frequently Asked Questions

Will this remove fungus and slime from stored diesel?
When dosed correctly it is formulated to kill and prevent bacterial and fungal growth, reducing slime and biomass that cause filter blockages.

Does it protect fuel pumps and injectors?
Yes; by restoring lubricity it helps reduce wear on pumps and injectors and is shown to meet industry lubricity testing.

Is it safe for regular diesel engines and tanks?
Yes; it is designed for diesel systems but should be used at recommended dosages and handled per label instructions for safe use.