Archoil AR6500 Diesel Treatment (40 oz) Two Pack – Treats 800 Gallons, Diesel Fuel Additive – Lubricity Improver, Injector Cleaner, DPF & Turbo Deposit Control, Cetane Booster

Customers report that the diesel treatment improves engine performance and increases fuel efficiency by up to 2 miles per gallon. The product effectively lubricates the fuel system and reduces regen frequency, with one customer noting a 340-mile interval between regen cycles. Customers appreciate the product's quality and find it provides good value, with one mentioning it pays for itself with just 2 ounces per fill-up.