Top Tier Cetane Enhanced
The best all-around diesel fuel system cleaner, Top Tier reduces fuel costs by cleaning the entire fuel system from top to bottom. Top Tier removes fuel system deposits that reduce fuel economy and asphaltenes that plug fuel filters. Top Tier increases power, reduces DPF (Diesel Particulate Filter) regeneration and stabilizes fuel for prolonged use. Top Tier is formulated especially for high pressure common rail fuel systems.
Cleans Fuel System
Improves Fuel Economy
Reduces DPF Regeneration
For Initial Use:
Use 16 ounces to every 100 gallons of diesel fuel.
For Subsequent Use:
Use 16 ounces to every 200 gallons of diesel fuel.
Use once every 10,000 miles.
For best results, add additive before filling tank.
More information here