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One filled 1-gallon jug, one gallon hand pump and two empty standard 8 fl oz refill bottles. Winter supports cold-weather fuel flow, injector cleaning and fuel-system lubricity. Treats up to 512 US gallons at the standard cold-weather rate; higher doses reduce coverage.
Opti-Lube Winter Anti-Gel Diesel Fuel Additive — 1-Gallon Kit with Pump & Two Empty 8 oz Bottles
Opti-Lube Winter is a diesel fuel additive formulated to support cold-weather fuel flow, injector cleaning and added fuel-system lubricity. It also helps separate water and protect against rust and corrosion.
Product data
| SKU | OPT-W1 |
| Formula | Winter Cold Flow Anti-Gel (blue label) |
| Package contents | One filled 1-gallon jug, one gallon hand pump and two empty standard 8 fl oz refill bottles. |
| Additive volume | 128 fl oz total; 128 fl oz per filled container |
| Fuel type | Diesel fuel; biodiesel compatible |
| Cold-weather rate — below 32°F (0°C) | ¼ fl oz per US gallon of diesel (1 fl oz per 4 gallons; 1:512) |
| Extreme cold — below −20°F (−29°C) | ½ fl oz per US gallon or more, as directed on the label (1 fl oz per 2 gallons; 1:256 or stronger) |
| Package treatment capacity | Up to 512 US gallons at ¼ fl oz per gallon; 256 gallons at ½ fl oz per gallon. Higher doses treat less fuel. |
Treatment and use
Measure the additive for the amount of diesel being treated. Below 32°F (0°C), use ¼ US fl oz per gallon of diesel. Below −20°F (−29°C), use ½ US fl oz per gallon or more, as directed on the container label. All volumes are US measures.
Mix while both the fuel and additive are above the fuel cloud point and at least 40°F (5°C). Treat before the fuel gels. Winter is a preventive anti-gel treatment; do not rely on it to restore fuel that has already gelled.
The label states that Winter helps fuel flow down to −40°F (−40°C), dependent on the base fuel. Cold-flow performance varies with the fuel and treatment rate; this is not a guaranteed operating temperature for every fuel. The label also lists a 3-point cetane improvement; actual results depend on the fuel.
Refilling and dispensing
The included refill bottles are supplied empty. Their capacities do not add to the quantity of Winter in this kit. Refill from the bulk container, measure the required dose and keep all containers clearly labeled and securely closed.
Read the product label and Safety Data Sheet for complete handling, storage and safety precautions. Continue normal fuel-filter and water-separator maintenance.

