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Dee-Zol Concentrate Diesel Treatment - Cases

$118.00 to $252.00

Concentrated multi-function diesel fuel supplement that solves common fuel-related problems. Improves combustion, reduces emissions, cleans deposits, controls water accumulation and lowers engine cetane requirement.  The best diesel treatment money can buy!

Purchase Individual Bottles  

Product Details

Bell's DEE-ZOL CONCENTRATE is especially formulated to solve all diesel related problems in low and high sulfur diesel fuels. It was the world's first diesel additive and has been manufactured continuously since 1954.

Treat Ratio

Product Size
Treats Up To  
16 oz.  160 gallons
32 oz. 320 gallons
1 gallon 1280 gallons
5 gallon 6400 gallons
Case (12 - 16 oz.) 1920 gallons
Case (12 - 32 oz.) 3840 gallons
Case (4 - 1 gal.) 5120 gallons
Benefits of Using Dee-Zol
  • Increases Mileage (3-5% or more)
  • Keeps Injectors, Rings, and Valves Clean
  • Eliminates Engine Sludge 
  • Controls and Removes Water Buildup
  • Increases Available Horsepower(5-10%)
  • Reduces Downtime
  • Reduces Harmful Emissions up to 90%
  • Reduces Downshifting
  • Stabilizes Fuel  


Bell's  DEE-ZOL CONCENTRATE is a balanced formulation for all grades and brands of diesel fuel, with a dispersant, moisture eliminator, detergent, combustion improving modifier, lubricant and fuel preservative.

How Dee-Zol Compares

See for yourself how DEE-ZOL CONCENTRATE compares to other diesel fuel treatments on the market today. Click the image below ti enlarge.
Diesel Additive Comparison Chart


WARNING: Cancer Harm

For more information, go to www.P65Warnings.ca.gov