Will gas mileage increase

I drive (and now use this in) a 1996 Toyota 4Runner. Prior to its use I'd averaged 17mpg, then performed a replacement on plugs, wires, and air filter (upgrading to a K&N); in addition to cleaning the MAF and throttle body (all on my own, mind you!). I now average anywhere between 19.5 (city) and just under 25 (highway). I'm not sure just how much of a fuel increase can be contributed to this product, but I no longer go without it!

Would keeping this in the car in hot Texas heat be an issue?

OF COARCE ITS A DANGEROUS ISSUE !! Storing any flamable liquid in a car is very dangerouse , especially a hot car !! you put yourself at risk of combustion from the heat & also combustion if you get in a accident !! buy a tiny bottle of lucas fuel additive , its about 5.5 oz.s !! fill that up and insulate it in trunk to keep it cool . then when you fill up ? you will have a bottle ready to put in your tank !! instead of hauling around a gallon of the stuff .

Whats difference between this and the fuel treatment 5 oz

Their is no difference other than the packaging

Will it help remove P0420 code?

2 bottles of Lucas oil, one gas refill apart, helped with my P0420 Code on Infiniti QX60 engine light. With the 2nd bottle, the light was gone. It worked like a charm. I will continue to keep the fuel tank clean moving forward. Tip : don't wait for the fuel tank to be completely empty before you refill.

We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Our Other Brands:Hewyn|Selfship

Lucas Oil 10003 Fuel Treatment - 1 Quart

Lucas Oil 10003 Fuel Treatment - 1 Quart

Product ID: 4988471

Details

Brand
Lucas Oil
Liquid Volume
1 Quarts
Package Information
Bottle
UPC
049807800031
Vehicle Service Type
Car Truck ATV

⛽Boosts fuel economy up to 5%

🔥Enhances power & acceleration

⚙️Cleans & lubricates entire fuel system

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

126.84 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Details

Brand
Lucas Oil
Liquid Volume
1 Quarts
Package Information
Bottle

Description

⛽ Power up your ride and never settle for less!

UNIVERSAL COMPATIBILITY - Works seamlessly with gasoline and diesel engines across cars, trucks, motorcycles, and more.
FUEL EFFICIENCY MAXIMIZER - Increase your MPG and save at the pump with every fill-up.
RUST CORROSION DEFENDER - Protect your engine components from wear and extend their lifespan.
POWER PERFORMANCE BOOSTER - Experience smoother acceleration and improved throttle response instantly.
COMPREHENSIVE FUEL SYSTEM CARE - Deep cleans injectors, carburetors, and combustion chambers for peak engine health.

Lucas Oil 10003 Fuel Treatment is the world’s #1 fuel additive designed for gasoline and diesel engines. It cleans and lubricates the entire fuel system, improves fuel economy, boosts power, neutralizes harmful contaminants, and protects against rust and corrosion. Compatible with a wide range of vehicles, it delivers noticeable performance gains and longer engine life with every use.

Specifications

ASIN	B000ARPVOI
Best Sellers Rank	#86 in Automotive ( See Top 100 in Automotive ) #3 in Diesel Additives
Brand	Lucas Oil
Brand Name	Lucas Oil
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 24,397 Reviews
Global Trade Identification Number	00049807100032
Included Components	1x 1 Quart bottle
Item Type Name	Fuel Injtr Cleaner
Item Weight	898 Grams
Liquid Volume	1 Quarts
Manufacturer	Lucas Oil
Material	Plastic
Model Number	LUC10003
Number of Items	1
Package Information	Bottle
Part Interchange Info	10003
Part Number	051-587
UPC	049807800031 049807400033 049807100032
Unit Count	32.0 Fluid Ounces
Warranty Description	30 Days

Reviews

T**D

24.01.2026

J**I

5.02.2026

T**N

22.01.2026

D**D

27.03.2024

R**C

21.03.2026

S**D

21.03.2026

N**N

19.04.2026

G**C

26.01.2026

C**N

28.03.2024

V**A

31.03.2026

S**.

2.05.2018

W**D

21.02.2026

M**R

15.06.2021

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.