Archoil Diesel Fuel System Kit - AR6400-D (12 oz) + AR6500 (40 oz) - Complete Restoration For All Diesel Engines, Injector Cleaner, Lubricity Improver, DPF & Turbo Deposit Control, Cetane Booster
- TWO-STEP FUEL SYSTEM RESET: Includes AR6400-D Diesel Fuel System Cleaner + AR6500 Diesel Treatment (40 oz) for a complete clean-and-maintain…
- 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 …
- 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 mor…
- IMPROVES LUBRICITY (ASTM D6079): AR6500 is tested to improve lubricity by 43% to protect fuel system components, including wear-sensitive pa…
Mubboo Value Score: 3.6/10
How it stacks up
Rated 4.8/5 — better than 100% of 53 Fuel Additives we track. Premium-tier pricing at $59.90.
Head-to-Head vs Category Leader
| Archoil | Lucas Oil (Leader) | |
|---|---|---|
| Price | $59.90 | $9.89 |
| Rating | 4.8/5 | 4.8/5 |
| Reviews | 2,699 | 24,615 |
| Mubboo Score | 3.6/10 | 9.0/10 |
The Archoil Diesel Fuel System Kit - AR6400-D (12 oz matches or exceeds the category leader in rating at a similar price point.
Quick Specs
- Capacity
- 40 Fluid Ounces
- Unit Count
- 52 Ounce
- Item Volume
- 976 Milliliters
- Part Number
- AR-FSK
- Manufacturer
- Archoil
- Number of Items
- 2
- Customer Reviews
- 4.8 out of 5 stars
- Best Sellers Rank
- #493 in Automotive (See Top 100 in Automotive)#4 in Diesel Additives
What reviewers say
Synthesized from 40 reviews · 100% verified purchases.
For maximum cleaning power, choose a product with high PEA content like Red Line SI-1 or Chevron Techron, but expect to use multiple treatments for severe deposits. For long-term storage, use a dedicated stabilizer such as STA-BIL or Star Tron to prevent gum and starting problems.
Rating reliability
Other Fuel Additives
Frequently Asked Questions
Is the Archoil Archoil Diesel Fuel System Kit - AR6400-D (12 oz) + AR6500 (40 worth buying in 2026?
It earns a Mubboo Score of 3.6/10, with a 4.8/5 rating from 2,699 reviews — better than 100% of Fuel Additives we track.
How much does the Archoil Archoil Diesel Fuel System Kit - AR6400- cost?
It is currently $59.90 — premium-tier pricing for Fuel Additives.
How does it compare to the top-rated Fuel Additives?
The Archoil Diesel Fuel System Kit - AR6400-D (12 oz matches or exceeds the category leader in rating at a similar price point.
Sources & References
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