Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722
20 Ounce
Price as of 2026-06-03. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$3–$10
- Mid-range:$10–$26← You are here
- Premium:$26+
Is This Right For You?
- •Royal Purple loyalists — the brand spans 21 products in our database
- •Lucas Oil 10003 Fuel Treatment offers a better rating (4.8/5) at a similar or lower price ($10)
- •Royal Purple 18000 Fuel Injector Cleaner — 44% cheaper at $6 (Score A)
- •Lucas Oil 10003 Fuel Treatment — higher rated at 4.8/5 ($10)
📊 Based on data analysis of 53 products in this category.
Mubboo Score: A-
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Fuel Additives
Computed from live Amazon rating, review count, and price across 53 Fuel Additives available to US consumers · last refreshed 2026-06-03.
How It Compares
This Product Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 | Most Popular Lucas Oil 10003 Fuel Treatment | Best Rated STA-BIL Storage Fuel Stabilizer | Best Value Royal Purple 18000 Fuel Injector Cleaner | |
|---|---|---|---|---|
| Price | $11.64 | $9.89 | $10.61 | $6.48 |
| Rating | 4.7/5 | 4.8/5 | 4.8/5 | 4.6/5 |
| Reviews | 3,083 | 24,615 | 14,291 | 3,314 |
| Mubboo Score | A- | A+ | A+ | A |
Quick Specs
- Size
- 1 Count (Pack of 1)
- Unit Count
- 1.0 Count
- Item Weight
- 1.25 Pounds
- Part Number
- 11722
- Manufacturer
- Royal Purple
- Model Number
- 11722
- Item Type Name
- Fuel System Cleand and Stabilizer
- Number of Items
- 1
What People 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.
- Improved engine performance and smoothness
- Effective fuel system cleaning and deposit removal
- Ease of use
- Fuel economy improvement
- Long-term fuel stabilization for storage
- High price and recent price increases
- Packaging issues during shipping
Expert Picks in Fuel Additives
- Chevron Techron Concentrate Plus Complete Fuel System Cleaner — Best fuel injector cleaner overall
- Lucas Upper Cylinder Lubricant and Injector Cleaner — Best fuel injector cleaner for diesel engines
- Gumout Regane High Mileage Fuel System Cleaner — Best fuel injector cleaner for high-mileage cars, engines and vehicles
- Royal Purple Max Atomizer Fuel Injector Cleaner — Best fuel injector cleaner for direct-injection cars and engines
Category recommendations from independent expert publications. Source links in References.
Related Video Reviews
- 📹 The TRUTH About DIESEL ADDITIVES…Scam or Science? — Freedom Worx
- 📹 STOP Buying Diesel Fuel Additives - Here's Why! — The Motor Oil Geek
- 📹 Redline SI-1 vs Techron — Which One Is Actually Worth Your Money? | Fuel System Cleaner Finals — Chris from Beachside Auto Parts
Key Features
- ✦3-in-1 fuel additive keeps new engines clean and improves vehicle's performance
- ✦Improves fuel economy an average of 3.2 percent
- ✦Increases horsepower an average of 2.6 percent
- ✦Reduces hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)
- ✦Fit type: Vehicle Specific
Source: product listing on Amazon.
About Royal Purple
- 21 products in our database
- Average rating: 4.8/5 across all products
- Price range: $6.48 – $123.99
- Categories: Fuel Additives, Motor Oil, transmission-fluids
If not the Max-Clean Fuel System Cleaner and Stabilizer 11722, consider these
Bottom Line
Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 earns Mubboo Score A-. Priced at $12 — a mid-range option, below the category average of $20. Rated 4.7/5 from 3,083+ reviews. Strong buy if: royal purple loyalists. Skip if: lucas oil 10003 fuel treatment offers a better rating (4.8/5) at a similar or lower price ($10) — Lucas Oil 10003 Fuel Treatment (Score A+, $10) may fit better.
Frequently Asked Questions
Is the Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 worth buying in 2026?
It earns a Mubboo Score of A-, with a 4.7/5 rating from 3,083 reviews — better than 64% of Fuel Additives we track.
How much does the Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 cost?
It is currently $11.64 — mid-tier pricing for Fuel Additives.
How does the Max-Clean Fuel System Cleaner and Stabilizer 11722 compare to other Fuel Additives?
The category's most-reviewed alternative is the Lucas Oil 10003 Fuel Treatment (4.8/5, 24,615 reviews, $9.89). The Max-Clean Fuel System Cleaner and Stabilizer 11722 carries a Mubboo Score of A- vs A+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-03) and may change.