Royal Purple 18000 Fuel Injector Cleaner - 6 fl. oz.
Royal Purple

Royal Purple 18000 Fuel Injector Cleaner - 6 fl. oz.

$6.48$7.49★ 4.6(3,314 reviews)
Mubboo Score 6.7/10
  • Restores fuel economy
  • Stabilizes ethanol
  • Maximizes horsepower
  • Improves responsiveness
  • For use in both gasoline and diesel engines
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Mubboo Value Score: 6.7/10

Quality9.2/10
based on 4.6/5 customer rating
Popularity1.3/10
3,314 reviews, top 36% in Fuel Additives
Value9.4/10
priced below 94% of Fuel Additives

How it stacks up

Rated 4.6/5 — better than 23% of 53 Fuel Additives we track. Budget-tier pricing at $6.48.

Head-to-Head vs Category Leader

Royal PurpleLucas Oil (Leader)
Price$6.48$9.89
Rating4.6/54.8/5
Reviews3,31424,615
Mubboo Score6.7/109.0/10

The Royal Purple 18000 Fuel Injector Cleaner - 6 fl. oz. offers comparable quality at 34% lower price.

Quick Specs

Model
18000
Lift Type
Power
Item Weight
6 ounces
Manufacturer
Royal Purple
OEM Part Number
18000
Customer Reviews
4.6 out of 5 stars
Special Features
Concentrated
Best Sellers Rank
#763 in Automotive (See Top 100 in Automotive)#6 in Fuel System Cleaners

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

Well reviewed — reliable rating
🟢 Sold & shipped by Amazon

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

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Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (2 Pack)
Red Line 60103 SI-1 Complete Fuel System Cleaner, Cleans and Prevents Corrosion in Fuel Systems, Cleans Injectors, Carburetors, Valve and Combustion Chamber Deposits - 15 Ounce (2 Pack)
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Red Line SI-1 Complete Fuel System Cleaner - 15 oz
Red Line SI-1 Complete Fuel System Cleaner - 15 oz
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Frequently Asked Questions

Is the Royal Purple Royal Purple 18000 Fuel Injector Cleaner - 6 fl. oz. worth buying in 2026?

It earns a Mubboo Score of 6.7/10, with a 4.6/5 rating from 3,314 reviews — better than 23% of Fuel Additives we track.

How much does the Royal Purple Royal Purple 18000 Fuel Injector Cleaner cost?

It is currently $6.48 — budget-tier pricing for Fuel Additives.

How does it compare to the top-rated Fuel Additives?

The Royal Purple 18000 Fuel Injector Cleaner - 6 fl. oz. offers comparable quality at 34% lower price.

Sources & References

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