STP Complete Fuel System Cleaner
Fuel Cleaner Deep Cleans Entire Fuel System, 5.25 Oz, Multicoloured, 1 Count (Pack of 1)
Price as of 2026-06-03. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$3–$10← You are here
- Mid-range:$10–$26
- Premium:$26+
Is This Right For You?
- •Budget-conscious shoppers — priced below 92% of Fuel Additives
- •Heet Iso-HEET Water Remover And Premium Fuel Line — 55% cheaper at $3 (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 STP Complete Fuel System Cleaner | Most Popular Lucas Oil 10003 Fuel Treatment | Best Rated STA-BIL Storage Fuel Stabilizer | Best Value Heet Iso-HEET Water Remover And Premium Fuel Line | |
|---|---|---|---|---|
| Price | $6.64 | $9.89 | $10.61 | $2.98 |
| Rating | 4.7/5 | 4.8/5 | 4.8/5 | 4.7/5 |
| Reviews | 958 | 24,615 | 14,291 | 3,281 |
| Mubboo Score | A | A+ | A+ | A+ |
Quick Specs
- Model
- STP CmpFuelSysClnr BTL 12/5.25fo US
- Position
- Outside
- Item Weight
- 5.5 ounces
- Manufacturer
- STP
- Customer Reviews
- 4.7 out of 5 stars
- Best Sellers Rank
- #3,234 in Automotive (See Top 100 in Automotive)#15 in Fuel System Cleaners
- Item model number
- 78568
- Product Dimensions
- 1.5 x 2.3 x 8 inches
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
- ✦One 5.25 fl oz bottle of STP Complete Fuel System Cleaner
- ✦Fuel treatment with 2x the amount of cleaning agents versus leading premium gasoline
- ✦PEA and PIBA detergents get rid of deposits to keep your system clean and fuel efficient
- ✦Automotive cleaner helps inhibit corrosion and restores engine performance for versatile car products
- ✦Use this STP fuel system cleaner every oil change or every 4,000 miles
Source: product listing on Amazon.
About STP
- 10 products in our database
- Average rating: 4.7/5 across all products
- Price range: $6.64 – $45.95
- Categories: Fuel Additives, Motor Oil, Probiotic Supplements, tire-and-wheel-tools
If not the Complete Fuel System Cleaner, consider these
Bottom Line
STP Complete Fuel System Cleaner earns Mubboo Score A. Priced at $7 — a budget-friendly option, below the category average of $20. Rated 4.7/5 from 958+ reviews. Strong buy if: budget-conscious shoppers.
Frequently Asked Questions
Is the STP Complete Fuel System Cleaner worth buying in 2026?
It earns a Mubboo Score of A, with a 4.7/5 rating from 958 reviews — better than 64% of Fuel Additives we track.
How much does the STP Complete Fuel System Cleaner cost?
It is currently $6.64 — budget-tier pricing for Fuel Additives.
How does the Complete Fuel System Cleaner 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 Complete Fuel System Cleaner 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.