Red Line 60103 SI-1 Complete Fuel System Cleaner
Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber…
Price as of 2026-08-11. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$7–$11
- Mid-range:$11–$24
- Premium:$24+← You are here
Is This Right For You?
- •Buyers who prioritize quality over price in Fuel Additives
- •Those who want a top-rated option — in the top 1% of Fuel Additives by rating
- •Risk-averse buyers — 9,236+ reviews give a highly reliable picture
- •You're on a tight budget — $13 above the category average of $18
- •STA-BIL Storage Fuel Stabilizer — 60% cheaper at $12 (Score A)
📊 Based on data analysis of 15 products in this category.
Mubboo Score: B+
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 15 Fuel Additives available to US consumers · last refreshed 2026-08-11.
How It Compares
This Product Red Line 60103 SI-1 Complete Fuel System Cleaner | Most Popular Chevron 67740-CASE Techron Concentrate Plus Fuel System | Best Rated STA-BIL Storage Fuel Stabilizer | Best Value Red Line SI-1 Complete Fuel System Cleaner | |
|---|---|---|---|---|
| Price | $30.99 | $39.98 | $12.48 | $17.47 |
| Rating | 4.8/5 | 4.6/5 | 4.8/5 | 4.8/5 |
| Reviews | 9,236 | 16,871 | 14,291 | 9,216 |
| Mubboo Score | B+ | B+ | A | A- |
Quick Specs
- Size
- 15 Fl Oz (Pack of 2)
- Unit Count
- 30.0 Fluid Ounces
- Item Volume
- 15 Fluid Ounces
- Part Number
- 60103
- Manufacturer
- Red Line
- Model Number
- 5
- Number of Items
- 2
- Special Feature
- Concentrated
What buyers say about Fuel Additives
Themes from buyer reviews across this category — not review data for this specific model.
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
- Lucas LUC10013 Fuel Treatment — Best Overall
- Red Line Complete Fuel System Cleaner — Best Value
- Star Tron Enzyme Fuel Treatment Concentrate — Honorable Mention
- Opti-Lube XPD Formula Diesel Fuel Additive — Best for Diesel Engines
- Red Line SI-1 Complete Fuel System Cleaner — Strongest PEA Cleaner
- BG Platinum 44K Fuel System Cleaner — Professional Grade
- CRC 1-Tank Power Renew — High PEA Concentration
- Chevron Techron Concentrate Plus — Best for Regular Maintenance
Category recommendations from independent expert publications. Source links in References.
Related Video Reviews
- 📹 We Tested the Most Popular Fuel Additives — One Clear Winner! — Unknown (automotive testing channel)
- 📹 19X Difference In Deposits! [Engine Test Results] — The Motor Oil Geek
Key Features
- ✦DESIGNED TO EXCEED EXPECTATIONS: Red Line complete SI-1 fuel system cleaner treatment for cleaning and preventing corrosion in fuel systems
- ✦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: Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation
- ✦EASY TO USE: Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
- ✦15 Ounce (2 Pack)
Source: product listing on Amazon.
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Bottom Line
Red Line 60103 SI-1 Complete Fuel System Cleaner earns Mubboo Score B+. Priced at $31 — a premium option, above the category average of $18. Rated 4.8/5 from 9,236+ reviews. Strong buy if: buyers who prioritize quality over price in fuel additives, those who want a top-rated option. Skip if: you're on a tight budget — Chevron 67740-CASE Techron Concentrate Plus Fuel System (Score B+, $40) may fit better.
Frequently Asked Questions
Is the Red Line 60103 SI-1 Complete Fuel System Cleaner worth buying in 2026?
It earns a Mubboo Score of B+, with a 4.8/5 rating from 9,236 reviews — better than 100% of Fuel Additives we track.
How much does the Red Line 60103 SI-1 Complete Fuel System Cleaner cost?
It is currently $30.99 — premium-tier pricing for Fuel Additives.
How does the 60103 SI-1 Complete Fuel System Cleaner compare to other Fuel Additives?
The category's most-reviewed alternative is the Chevron 67740-CASE Techron Concentrate Plus Fuel System (4.6/5, 16,871 reviews, $39.98). The 60103 SI-1 Complete Fuel System Cleaner carries a Mubboo Score of B+ vs B+.
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 (2026-08-11) and may change.