TWO-STEP FUEL SYSTEM RESET: Includes AR6400-D Diesel Fuel System Cleaner + AR6500 Diesel Treatment (40 oz) for a complete clean-and-maintain solution
HOW IT WORKS: Use AR6400-D first for a deep clean (12 oz treats 30-40 gallons), then use AR6500 at every fill-up for ongoing protection (40 oz treats up to 400 gallons)
FOR ALL DIESEL ENGINES: Suitable for all diesel vehicles and equipment, including modern HPCR systems
CLEANS INJECTORS & RESTORES RESPONSE: Removes injector deposits and restores spray patterns for smoother running, improved response, and more efficient combustion
IMPROVES LUBRICITY (ASTM D6079): AR6500 is tested to improve lubricity by 43% to protect fuel system components, including wear-sensitive parts like the CP4 pump
BOOSTS CETANE UP TO +8: AR6500 raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability
SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency - supporting performance and fuel economy
KEEPS TURBO CLEAN: Reduces deposit formation that impacts turbo response for restored boost and smoother acceleration
Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.
We do not currently offer free shipping. However, this may be added at some point. We apologize.
If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.
For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.
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