Red Line SI-1 Complete Fuel System Cleaner
15 oz
Price as of 2026-06-05. Check Amazon for the current price.
Quick Decision
Price Intelligence
Currently $17.47 — the 90-day average is $16.40.
All-time low: $15.40 on Sat Apr 04 (from 182 price checks).
Is This Right For You?
- •Those who want a top-rated option — in the top 1% of Fuel Additives by rating
- •Risk-averse buyers — 9,216+ reviews give a highly reliable picture
- •Top 2% bestseller in Fuel Additives — proven market demand
- •Red Line loyalists — the brand spans 20 products in our database
- •Gumout 510011 Multi-System Tune-Up — 56% cheaper at $8 (Score A)
📊 Based on data analysis of 53 products in this category.
Mubboo Score: A
How It Compares
This Product Red Line SI-1 Complete Fuel System Cleaner | Most Popular Lucas Oil 10003 Fuel Treatment | Best Rated STA-BIL Storage Fuel Stabilizer | Best Value Gumout 510011 Multi-System Tune-Up | |
|---|---|---|---|---|
| Price | $17.47 | $9.89 | $10.61 | $7.64 |
| Rating | 4.8/5 | 4.8/5 | 4.8/5 | 4.6/5 |
| Reviews | 9,216 | 24,615 | 14,291 | 4,186 |
| Mubboo Score | A | A+ | A+ | A |
Quick Specs
- Size
- 15 Fl Oz (Pack of 1)
- Item Form
- Oil
- Unit Count
- 15.0 Fluid Ounces
- Item Volume
- 443 Milliliters
- Item Weight
- 16 ounces
- Part Number
- 60103
- Manufacturer
- Red Line
- Model Number
- (60103)
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
- ✦DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner is a premium fuel additive, providing an effective fuel treatment solution to clean and prevent corrosio…
- ✦PERFORM AND PROTECT: Fuel additive cleans injectors, carburetors, valve and combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents
- ✦EFFICIENT FUEL BURN: A gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation, leading to smoother operation and increased power o…
- ✦EASY TO USE: Use one bottle of Redline Fuel System Cleaner per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
- ✦ENAHNCED ENGINE EFFCIENCY: Experience improved fuel economy and engine performance with Red Line 60103 SI-1 Complete Fuel System Cleaner, as it effectively removes deposits, for en…
Source: product listing on Amazon.
About Red Line
- 20 products in our database
- Average rating: 4.8/5 across all products
- Price range: $12.79 – $519.96
- Categories: Fuel Additives, Motor Oil
Other Fuel Additives
Featured in Our Reviews
Bottom Line
Red Line SI-1 Complete Fuel System Cleaner earns Mubboo Score A. At $17 it's above the 90-day average of $16 — waiting for a dip may pay off. Rated 4.8/5 from 9,216+ reviews. Strong buy if: those who want a top-rated option, risk-averse buyers.
Frequently Asked Questions
Is the Red Line SI-1 Complete Fuel System Cleaner worth buying in 2026?
It earns a Mubboo Score of A, with a 4.8/5 rating from 9,216 reviews — better than 100% of Fuel Additives we track.
How much does the Red Line SI-1 Complete Fuel System Cleaner cost?
It is currently $17.47. The 90-day average is $16.40 and the all-time low we recorded is $15.40.
How does the SI-1 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 SI-1 Complete Fuel System Cleaner carries a Mubboo Score of A vs A+.
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 (2026-06-05) and may change.