HiTEC® 4691

Diesel Performance Additive
To inquire about availability in other regions or to find out more contact your Afton Representative.

Key Performance Benefits

  1. Traditional Coking Deposits
  2. ULSD Internal Deposits
The injectors are kept clean and free from deposits resulting in:
  • Increased fuel economy
  • Improved power and acceleration
  • Reduced emissions
  • Enhanced engine life
  • Optimal performance in industry tests
    • DW-10 < 2% power loss
    • XUD-9 < 50% flow loss
Other benefits include:
  • Excellent corrosion protection
  • Superb anti-foam performance in biodiesel blends
  • Biodiesel performance up to B10


HiTEC® 4691 diesel performance additive delivers our most advanced Greenclean™ detergent technology, designed to give improved injector deposit control in both conventional and modern diesel vehicles. Greenclean™ detergent technology has proven “Keep-clean” and “Clean-up” performance for both types of diesel injector deposits impacting vehicles today:

Handling Information

Max Handling Temp: Ambient temperature
Shelf Life: 36 months at ambient temperature

Typical Characteristics

Recommended Dosage

Depending on your performance needs the treat-rate of HiTEC® 4691 additive can be modified to achieve the performance tier that you are targeting, from Optimal “Keep-clean” up to Supreme “Clean-up”. Treat-rates may vary depending on base fuels.

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