AMSOIL DIESEL INJECTOR CLEAN + CETANE BOOST FUEL ADDITIVE

AMSOIL Diesel Injector Clean + Cetane Boost combines concentrated detergency, lubricity improvement, and cetane enhancement in a single additive, delivering measurable performance gains for diesel trucks, equipment, and marine engines running on today's ultra-low-sulfur fuel.

Modern diesel fuel creates problems that most owners don't see until performance has already degraded. Ultra-low-sulfur diesel (ULSD) stripped away much of the natural lubricity that fuel pumps and injectors depend on. At the same time, high-pressure common-rail injection systems operating at 30,000 psi and above have component clearances as tight as 1-3 microns, making them extremely vulnerable to internal deposits that older additive chemistry was never designed to address. The result is lost power, rough idle, increased fuel consumption, and premature wear on expensive fuel-system components.

CLEANS INTERNAL AND EXTERNAL INJECTOR DEPOSITS
Traditional fuel additives target external carbonaceous deposits on injector nozzles. That approach misses the bigger problem in modern Duramax, Cummins, and Power Stroke engines. Internal diesel injector deposits form on the injector pintle and other precision components inside the injector body, causing needle sticking and even seizure at clearances measured in single microns. AMSOIL Diesel Injector Clean + Cetane Boost uses advanced chemistry specifically formulated to target both internal diesel injector deposits and traditional external deposits. Cleaning these deposits restores spray patterns, improves fuel atomization, and brings power and fuel economy back toward like-new levels. With regular use, it keeps injectors clean and prevents deposit-related performance loss from recurring.

INCREASES CETANE UP TO 8 POINTS
Low cetane numbers mean longer ignition delay, incomplete combustion, more smoke, and harder starts. AMSOIL Diesel Injector Clean + Cetane Boost raises cetane by up to 8 points at the clean-up treat rate, improving ignition quality and promoting a more complete burn. The practical results are smoother idle, reduced smoke and emissions, improved cold-temperature startability, and maximum available horsepower from every gallon of fuel. At the maintenance treat rate, it delivers a 4-point cetane increase to keep fuel quality consistently above what the pump delivers. Owners of Ram 2500 Cummins trucks, Ford Super Duty Power Strokes, and Chevy/GMC Duramax pickups will notice the difference in throttle response and overall drivability.

IMPROVES FUEL ECONOMY UP TO 8 PERCENT
Deposit buildup on injectors interrupts spray patterns, causing incomplete combustion and wasted fuel. By restoring proper fuel atomization and improving ignition quality through higher cetane, AMSOIL Diesel Injector Clean + Cetane Boost improves fuel economy by up to 8 percent. For a diesel truck burning through fuel on a daily commute or long tow, the net savings on fuel can offset the cost of the additive entirely.

RESTORES CRITICAL LUBRICITY TO ULSD FUEL
The ASTM D975 diesel fuel standard specifies a wear scar below 520 microns in ASTM D6079 testing, while the Engine Manufacturers Association (EMA) calls for a tighter limit below 460 microns. AMSOIL tested diesel fuels from nine states across the U.S. and found baseline wear scars ranging from 484 to 551 microns. After treatment with Diesel Injector Clean + Cetane Boost, those same fuels showed wear scars between 327 and 397 microns, well below both the ASTM and EMA thresholds. That represents a significant reduction in wear-scar diameter across every fuel sample tested. For high-pressure fuel pumps and injectors in engines like the 6.7L Cummins, 6.6L Duramax, and 6.7L Power Stroke, improved lubricity translates directly to longer component life and fewer costly fuel-system repairs.

EXTENDS FUEL-FILTER LIFE
Modern diesel engines return hot fuel to the tank, raising fuel temperatures and accelerating the formation of carbonaceous deposits that collect in the fuel filter. Premature filter plugging means unscheduled maintenance and potential fuel starvation. AMSOIL Diesel Injector Clean + Cetane Boost protects against these deposits, helping extend fuel-filter life and reducing the frequency of filter replacements on both light-duty pickups and heavy-duty equipment.

COMPATIBILITY AND APPLICATIONS
AMSOIL Diesel Injector Clean + Cetane Boost is safe for use in all diesel fuels, including biodiesel blends. It is alcohol-free. Use it in light-duty diesel trucks such as the Ford F-250/F-350 Power Stroke, Ram 2500/3500 Cummins, and Chevy/GMC 2500HD/3500HD Duramax, as well as diesel SUVs like the BMW 328d, Chevy Colorado diesel, and Mercedes-Benz GLE 350d. It also works in heavy-duty on- and off-road diesel engines, agricultural equipment like Case and John Deere tractors, and marine diesel applications. It combats fuel-system corrosion across all these platforms.

TREAT RATES
For the 16-oz., 64-oz., and larger package sizes, use 2 oz. per 5 gallons of fuel for initial clean-up (8-point cetane increase) and 1 oz. per 5 gallons for ongoing maintenance (4-point cetane increase). For the 8-oz. bottle, use 2 bottles per 20 gallons for clean-up and 1 bottle per 20 gallons for maintenance. Add before filling the tank. For cold-weather fuel protection, switch to AMSOIL Diesel Cold Flow or AMSOIL Diesel All-In-One.

Wear scar diameter measured per ASTM D6079. Lower numbers indicate better lubricity. ASTM D975 limit: 520 µm. EMA limit: 460 µm. Fuels tested in 2017.