• Opti-Lube is the ultimate in performance diesel fuel additives. Our best diesel fuel additives for warm weather and your wallet. 
  • Improving Lubricity is just the beginning, this product also improves efficiency, cleans injectors and boosts cetane by 5 - 7 points. Want more information about Cetane? Read "The Different Aspects of Cetane" on page 3 of our 2015 October News Letter.

Opti-Lube products protect your equipment by providing exceptional lubrication in the fuel system (ranked first in an independent study, view it here).

For past news letters, studies/test, and other educational information please visit our General Information page.

*Available by the 4oz 8 pack, 8 oz. 6 pack, Quart, Gallon, 5-Gallon Pail and 55 Gallon Drum

  • Boosts Cetane by 5 - 7 Points
  • Enhanced Lubricity for Reduced Fuel System Wear
  • Improved Fuel Economy
  • Increased Power
  • Reduced Deposits
  • Reduced Emissions
  • Prevents Rust & Corrosion
  • Cleans Injectors
  • Improved Storage Stability (More than doubles storage life of diesel fuel)
  • Improved Water Separation

Summer+ Formula Treatment Rates

Summer+ Formula: 1 to 1280 (1 ounce per 10 gallons of diesel fuel)

Minimum treatment rate: 1 to 2560 (1 ounce per 20 gallons of diesel fuel)

1 8 pack of 4oz bottles treats 320 - 640 gallons of diesel fuel

1 6 pack of 8oz bottles treats 480 - 960 gallons of diesel fuel

1 quart treats 320 - 640 gallons of diesel fuel

1 gallon treats 1280 - 2560 gallons of diesel fuel

5 gallon pail treats 6,400 - 12,800 gallons of diesel fuel

55 gallon drum treats 70,400 - 140,800 gallons of diesel fuel

  • Summer+ Formula: 4oz 8 pack

    Summer+ Formula: 4oz 8 pack

    $27.60
  • Summer+ Formula: 8 pack 4oz bottles with Opti-Box

    Summer+ Formula: 8 pack 4oz bottles with Opti-Box

    $43.16
  • Summer+ Formula: 8oz 6 pack

    Summer+ Formula: 8oz 6 pack

    $35.68
  • Summer+ Formula: 6 pack 8oz bottles with Opti-box

    Summer+ Formula: 6 pack 8oz bottles with Opti-box

    $51.24
  • Summer+ Formula: Quart

    Summer+ Formula: Quart

    $15.00
  • Summer+ Formula: Quart, Case of 12

    Summer+ Formula: Quart, Case of 12

    $180.00
  • Opti-Lube Summer+ 1 Gallon without accessories

    Summer+ Formula: 1 Gallon without Accessories

    $54.46
  • Summer+ Formula: 1 Gallon with Accessories

    Summer+ Formula: 1 Gallon with Accessories

    $61.76
  • Summer+ Formula: 5 Gallon Pail without Accessories. Treats up to 12,800 gallons of diesel fuel. SKU: OPT-SP5-NA

    Summer+ Formula: 5 Gallon Pail without Accessories

    $246.14
  • Summer+ Formula: 5 Gallon Pail with Accessories

    Summer+ Formula: 5 Gallon Pail with Accessories

    $267.06
  • Summer+ Formula: 5 Gallon Pail with Accessories #2

    Summer+ Formula: 5 Gallon Pail with Accessories #2

    $286.92
  • Summer+ Formula: 55 Gallon Drum

    Summer+ Formula: 55 Gallon Drum

    $2,515.32