- One ounce treats up to 2.5 gallons of fuel
- Combines the benefits of AMSOIL Diesel Injector Clean, Diesel Cold Flow and Diesel Cetane Boost in one convenient package
- Delivers outstanding detergency, improved lubricity, better cold flow and higher cetane
- Provides excellent all-season protection and performance
- Provides significant lubricity improvement in diesel fuels found across the U.S., delivering improved wear protection.1
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1Fuels tested in 2017.
Product Overview
Specially engineered to provide exceptional all-season protection for a serious performance boost. One dose delivers outstanding detergency, improved lubricity, better cold flow and higher cetane.
CLEANS, PROTECTS AND RESTORES POWER
- Cleans dirty injectors
- Restores power and torque
- Reduces smoke and emissions
- Combats fuel-system corrosion
- Provides significant lubricity improvement in diesel fuels found across the U.S., delivering improved wear protection.1
1Fuels tested in 2017.
AMSOIL Increases Lubricity
Testing reveals AMSOIL Diesel 4-IN-1 provides significant lubricity improvement in diesel fuels found across the U.S., delivering improved wear protection.OO
OOFuels tested in 2017.
SUPERIOR COLD-TEMPERATURE PROTECTION
- Lowers cold filter-plugging point (CFPP) by up to 40°F (22°C)
- Enhances engine reliability in cold temperatures
- Improves low-temperature startability
- Prevents wax settling during storage
IMPROVES FUEL QUALITY
- Increases cetane up to 4 points
- Delivers maximum horsepower
- Increases fuel economy up to 8%
- Improves startability
- Smooths idle
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Product information checked: September 2026. Product formulations, specifications, applications, availability and published claims can change.
For the latest official information, consult the AMSOIL Corproate Website.
