STP Complete Fuel System Cleaner - Fuel Additives | Mubboo
STP

STP Complete Fuel System Cleaner

Fuel Cleaner Deep Cleans Entire Fuel System, 5.25 Oz, Multicoloured, 1 Count (Pack of 1)

$6.644.7(958 reviews)
Mubboo Score A
Buy on Amazon $6.64

Price as of 2026-06-03. Check Amazon for the current price.

Quick Decision

Mubboo Score
A
Best For
Budget-conscious shoppers
Reviews
958+ · reasonably reliable

Price Intelligence

📊 In Fuel Additives, this is a budget pick.
  • Budget:$3–$10← You are here
  • Mid-range:$10–$26
  • Premium:$26+

Is This Right For You?

✅ Great for
  • Budget-conscious shoppers — priced below 92% of Fuel Additives
💡 Consider instead
  • 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

Quality9.4/10
based on 4.7/5 customer rating
Popularity6.8/10
958 reviews, top 75% in Fuel Additives
Value9.2/10
priced below 92% of Fuel Additives
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
Rating4.7/54.8/54.8/54.7/5
Reviews95824,61514,2913,281
Mubboo ScoreAA+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.

Praised for
  • Improved engine performance and smoothness
  • Effective fuel system cleaning and deposit removal
  • Ease of use
  • Fuel economy improvement
  • Long-term fuel stabilization for storage
Common complaints
  • High price and recent price increases
  • Packaging issues during shipping

Expert Picks in Fuel Additives

cnet
  • 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

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

💰 Save money
Heet Iso-HEET Water Remover And Premium Fuel Line Antifreeze + Injector Cleaner Helps Increase Gas Mileage Improves Engine Performance Year Round Performance, 12 fl. oz. (28202) , Red - Fuel Additives | Mubboo
Heet Iso-HEET Water Remover And Premium Fuel Line
$2.98 · 4.7 (3,281)
$3.70 less than the Complete Fuel System Cleaner, with 4.7★ from 3,281 reviews
Higher rated
Lucas Oil 10003 Fuel Treatment - 1 Quart - Fuel Additives | Mubboo
Lucas Oil 10003 Fuel Treatment
$9.89 · 4.8 (24,615)
4.8★ vs 4.7★ — rated 0.1 higher by 24,615 reviewers
🔥 Most popular
Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner - 12 oz. (Pack of 6) - Fuel Additives | Mubboo
Chevron 67740-CASE Techron Concentrate Plus Fuel System
$39.98 · 4.6 (16,871)
16,871 reviews — 17.6× more than the Complete Fuel System Cleaner
See all Fuel Additives

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.

Buy on Amazon $6.64Last verified: 2026-06-03

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.