Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive
Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive
Hero image 0 of Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive, 0 of 10
50+ bought since yesterday, try a subscriptionOverall pick

Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive

Key item features

  • Optimal Fuel Efficiency: This 32 oz. automotive additive causes fuel to burn more efficiently, leading to greater fuel economy and reduced emissions.
  • Comprehensive Cleaning: Formulated with a high detergent action, it cleans and lubricates the entire fuel system, including carburetors and injectors.
  • Engine Compatibility: Suitable for both gasoline and diesel engines, whether carbureted or fuel injected, ensuring broad application.
  • Performance Enhancement: The blend of super slick oils and additives allows the engine to operate at maximum efficiency, increasing power and decreasing fuel consumption.
  • Emissions Compliance: Helps vehicles pass smog tests and neutralizes the harmful effects of low sulfur diesel fuel, complying with federal requirements.
  • Heat Resistant: Features a blend of heat resistant, super slick oils and additives, maintaining effectiveness under various operating conditions.
Generated by AI
Current price is Now $9.89
You save $5.10
was $14.99
30.9 ¢/fl oz
Price when purchased online
  • Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $9.89
One-time purchase $9.89

How do you want your item?

Try 30 days for just $1! Choose a plan at checkout.
How do you want your item?
Ships to
Arrives by Tomorrow
Sold and shipped by Walmart.com
Free 90-day returns
This item is gift eligible

More seller options (13)

Starting from $15.95

About this item

Product details

Specifications

Warranty

Warnings

Customer ratings & reviews

4.8 out of 5 stars
stars
1,210 ratings365 reviews
How item rating is calculated

Reviews summary

Pros

  • : Increases fuel efficiency in some vehicles.
  • : Offers cost-effective solution at lower price point.
  • : Improves engine efficiency and gas mileage.
  • : Provides cleanliness in fuel systems.
  • : Improves mileage by reducing carbon buildup.
  • : Helps remove carbon buildup and lubricate components.
Generated by AI
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

Showing 1-3 of 365 reviews

Feb 7, 2026
Schnauzer7
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I trust Lucas Oil products. I have used other types of Lucas Products. I believe this was the best value/performance combination at the time of purchase. The bottle is graduated in ounces, so you know exactly how much you are adding to your tank, since it is a larger size bottle. I trust it is keeping my components clean.

Helpful?3GCEB4V1FX0616777813
Dec 3, 2025
Deneen
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

I have a Jeep grand Cherokee 2004 I've been using this for years. I have almost 200,000 miles on it. This stuff has been great. It it really does help the grade of fuel that you put in your vehicle. I've had no problems since using it and my fuel last a lot longer, so I start investing in the larger bottle because by the time I buy two small bottles to treat my gas, it only makes sense to buy the larger bottle, especially if you have a old vehicle no matter what the fuel some of this fuel out here is watered down and we all know that sometimes we have to stop where we don't wanna stop and it could cause your vehicle to run funny so please invest in this. It's a very great product.

Helpful?3GCEB4V1FX0616777813
Oct 26, 2025
cthomas7694
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Great Product

Lucas Oil High Mileage Fuel Treatment is a top-rated fuel additive known for improving fuel efficiency, engine performance, and reducing emissions—especially in older vehicles. If you're looking to stretch your fuel budget while keeping your engine in peak condition, Lucas Oil High Mileage Fuel Treatment is a standout choice. Designed specifically for vehicles with higher mileage, this additive has earned praise for its ability to clean fuel injectors, reduce carbon buildup, and enhance overall combustion efficiency. 🌟 Key Benefits: - Improves Fuel Economy: Many users report noticeable gains in miles per gallon after consistent use, especially in older cars that may have accumulated deposits. - Cleans and Lubricates: The formula contains detergents that clean the fuel system and lubricants that reduce friction, helping the engine run smoother. - Reduces Emissions: By promoting more complete combustion, it helps lower harmful exhaust emissions—a win for both your wallet and the environment. - Versatile Use: Safe for both gasoline and diesel engines, and compatible with leaded and unleaded fuels. 🛠️ Application %26 Ease of Use: The 5.25-ounce bottle is compact and easy to use—just pour it directly into your fuel tank during a fill-up. Clear instructions on the packaging make it beginner-friendly, and its small size makes it convenient to store in your glove box or garage. What Sets It Apart: Unlike some additives that rely on alcohol or harsh solvents, Lucas Oil's treatment uses heat-resistant oils and fuel conditioners. This helps neutralize low-sulfur fuel issues and prevents spark plug misfires caused by sediment buildup. User Feedback: Drivers consistently highlight smoother engine performance, quieter operation, and improved throttle response. It's especially popular among those maintaining older vehicles who want to extend engine life without costly repairs. --- If you're managing a fleet, maintaining a family car, or simply want better fuel efficiency, this additive offers a practical and affordable solution. Would you like help comparing it with other fuel treatments or finding one suited for diesel engines or marine use? Sources: Fuel Capacity Review Guide The Drive Review

Helpful?3GCEB4V1FX0616777813