AMSOIL Diesel Fuel Additives | Injector Clean, Cetane Boost, Cold Flow & Recovery
AMSOIL diesel fuel additives clean injectors, boost cetane, prevent gelling, and rescue frozen fuel systems. All-season protection for light-, medium-, and heavy-duty diesel applications.
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AMSOIL Diesel Fuel Additives | Injector Clean, Cetane Boost, Cold Flow & Recovery: Every Product in the Line
| Product | Viscosity | Details | Shop |
|---|---|---|---|
| AMSOIL Diesel 4-IN-1 | 4-IN-1 Concentrate | Details → | Shop at AMSOIL.com → |
| AMSOIL Diesel Cetane Boost | Cetane Boost | Details → | Shop at AMSOIL.com → |
| AMSOIL Diesel Cold Flow | Cold Flow | Details → | Shop at AMSOIL.com → |
| AMSOIL Diesel Injector Clean | Injector Clean | Details → | Shop at AMSOIL.com → |
| AMSOIL Diesel Injector Clean + Cetane Boost | Injector Clean + Cetane | Details → | Shop at AMSOIL.com → |
| AMSOIL Diesel Recovery | Emergency Recovery | Details → | Shop at AMSOIL.com → |
AMSOIL Diesel Fuel Additives
AMSOIL diesel fuel additives clean injectors, restore horsepower, boost cetane, prevent cold-weather gelling, and rescue frozen fuel systems. The lineup covers every need from everyday maintenance through emergency fuel-system recovery. All products are safe for use in biodiesel and ultra-low-sulfur diesel (ULSD).
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The Lineup at a Glance
Diesel 4-IN-1 (ADB) — combines the detergency and lubricity of Diesel Injector Clean, the cold-flow protection of Diesel Cold Flow, and the cetane boost of Cetane Boost in one all-season dose. Lowers CFPP up to 40°F, raises cetane up to 4 points, improves fuel economy up to 8%.
Diesel Injector Clean + Cetane Boost (ADS) — warm-weather combined protection: detergency, lubricity, and up to 8-point cetane increase. Pair with Diesel Cold Flow in winter, or switch to Diesel 4-IN-1 for year-round convenience.
Diesel Injector Clean (ADF / ADFP) — targeted injector cleaning and ULSD lubricity. Cleans internal diesel injector deposits and traditional carbonaceous deposits. Helps prolong time between EGR and DPF regenerations.
Diesel Cetane Boost (ACB) — targeted cetane booster. Raises cetane up to 8 points for maximum horsepower, better fuel economy, and easier starts. Compatible with DPFs.
Diesel Cold Flow (ADD) — targeted winter protection. Lowers CFPP up to 40°F in ULSD, prevents wax settling, inhibits fuel-filter icing. Must be added above the cloud point.
Diesel Recovery (DRC) — emergency treatment. Dissolves wax crystals in already-gelled fuel and thaws frozen fuel filters. One 30-oz bottle treats up to 30 gallons.
Applications
All AMSOIL diesel fuel additives are formulated for heavy- and light-duty, on- or off-road, and marine diesel engines. Safe for use in all diesel fuels including biodiesel and ULSD. The cetane, injector-clean, and combined products are compatible with diesel particulate filters (DPFs) and other modern exhaust emission systems.
Preventive additives (Diesel 4-IN-1, Diesel Cold Flow, Diesel Injector Clean + Cetane Boost, Diesel Injector Clean, Diesel Cetane Boost) must be added before filling the tank and above the diesel fuel cloud point. They will not reverse gel or wax crystals once formed — for that situation, use Diesel Recovery.
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Frequently Asked Questions
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Using AMSOIL diesel fuel additives does not void your new vehicle or equipment manufacturer warranty. All AMSOIL products are backed by the AMSOIL Limited Warranty.
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Frequently Asked Questions
Which AMSOIL diesel fuel additive should I use?
For all-season protection in one dose, use AMSOIL Diesel 4-IN-1 (ADB) — it combines injector cleaning, lubricity, cold-flow and cetane boost. For warm-weather detergency and cetane boost only, use Diesel Injector Clean + Cetane Boost (ADS). For cold-weather protection only, add Diesel Cold Flow (ADD). For cetane boost only, use Diesel Cetane Boost (ACB). For injector cleaning and lubricity only, use Diesel Injector Clean (ADF/ADFP). If fuel has already gelled in cold weather, use Diesel Recovery (DRC) as an emergency treatment.
Are AMSOIL diesel fuel additives safe for DPFs and biodiesel?
Yes. AMSOIL diesel fuel additives are safe for use in all diesel fuels, including biodiesel. The cetane, injector-clean, and combined products are compatible with all types of exhaust emission systems, including diesel particulate filters (DPFs).
Can I use a preventive additive once my fuel has already gelled?
No. Diesel Cold Flow and Diesel 4-IN-1 are preventive additives and must be added above the cloud point — they will not reverse gel or wax crystals once formed. If fuel has already gelled, use AMSOIL Diesel Recovery (DRC) as an emergency treatment to dissolve the wax crystals and thaw frozen fuel filters.
Do AMSOIL diesel fuel additives contain alcohol?
No. All AMSOIL diesel fuel additives in this lineup are alcohol-free. Diesel Recovery is also non-corrosive and contains no chemicals that interact with fuel system components.