Royal Purple Max-Clean Fuel System Cleaner and Stabilizer 11722 20 Ounce
- 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
Mubboo Value Score: 5.7/10
How it stacks up
Rated 4.7/5 — better than 64% of 53 Fuel Additives we track. Mid-tier pricing at $11.64.
Head-to-Head vs Category Leader
| Royal Purple | Lucas Oil (Leader) | |
|---|---|---|
| Price | $11.64 | $9.89 |
| Rating | 4.7/5 | 4.8/5 |
| Reviews | 3,083 | 24,615 |
| Mubboo Score | 5.7/10 | 9.0/10 |
The category leader Lucas Oil 10003 Fuel Treatment - 1 Quart offers better ratings at $9.89.
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 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
About Royal Purple
- 17 products in our database
- Average rating: 4.8/5 across all products
- Price range: $6.48 – $123.99
- Categories: Fuel Additives, Motor Oil
Other Fuel Additives
Frequently Asked Questions
Is the Royal Purple Royal Purple Max-Clean Fuel System Cleaner and Stabilizer worth buying in 2026?
It earns a Mubboo Score of 5.7/10, with a 4.7/5 rating from 3,083 reviews — better than 64% of Fuel Additives we track.
How much does the Royal Purple Royal Purple Max-Clean Fuel System Clean cost?
It is currently $11.64 — mid-tier pricing for Fuel Additives.
How does it compare to the top-rated Fuel Additives?
The category leader Lucas Oil 10003 Fuel Treatment - 1 Quart offers better ratings at $9.89.
Sources & References
Mubboo may earn a commission from purchases made through links on this page. Prices and availability are accurate as of the last sync and may change.