Opti-Lube Marine Diesel Fuel Improver — 1 Quart (32 oz), Treats up to 256 Gallons
Marine diesel fuel additive designed to support lubricity, injector cleanliness, cetane performance and storage stability. Includes a demulsifier to help separate water. One 32 oz quart treats up to 256 gallons at the standard rate of 1 oz per 8 gallons.
Marine — Diesel fuel protection for operation and storage
Opti-Lube Marine Diesel Fuel Improver combines fuel-system lubrication, injector cleaning, cetane improvement and storage support in one diesel additive. Its demulsifier helps separate water from the fuel, an important part of fuel management in marine applications.
Benefits
- Lubricity support: Helps reduce wear in the diesel fuel system.
- Injector cleaning: Helps reduce deposits and maintain cleaner injectors.
- Cetane improvement: The published product information lists a 1–3 point improvement; results depend on the starting fuel.
- Combustion support: Cetane improvement can help reduce ignition delay, support cold starting and reduce engine noise.
- Storage stability: Helps stabilize diesel during storage.
- Water separation: Demulsifying chemistry helps separate water for removal through the fuel system’s normal water-management process.
- Corrosion protection: Helps protect fuel-system components against rust and corrosion.
Standard treatment rate
Use 1 US fl oz per 8 gallons of diesel. One quart (32 oz) treats up to 256 gallons at the published standard rate.
| Diesel to treat | Marine additive required |
| 8 gallons | 1 oz |
| 32 gallons | 4 oz |
| 64 gallons | 8 oz |
| 128 gallons | 16 oz |
| 256 gallons | 32 oz (one quart) |
Product data
| Product | Opti-Lube Marine Diesel Fuel Improver |
| Package | One 1-quart bottle (32 US fl oz) |
| Fuel application | Marine diesel fuel systems |
| Published standard rate | 1 oz per 8 gallons of diesel |
| Published treatment capacity | Up to 256 gallons per bottle |
| Water-handling chemistry | Demulsifier (water separation) |
| Published emissions compatibility | Compatible with vehicle emissions systems |
| SKU | OPT-MQRT |
Using Marine Formula
- Determine the gallons of diesel being treated and measure the corresponding additive dose.
- Add to the diesel fuel following the bottle label and your equipment’s fueling procedure.
- Maintain the fuel filters and water separator, and remove separated water as directed by the equipment manufacturer.
The published description lists cold-flow support down to −5°F, depending on the base fuel. Actual cold-weather and storage performance vary with the fuel and conditions; follow the current product label and equipment requirements.
Product documents and help
View Safety Data Sheets for handling and storage information. For application or treatment questions, contact Opti-Lube or call/text 801-491-3717.
