---
product_id: 5573910
title: "Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment - 5.25 fl oz."
brand: "lucas oil"
price: "63 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Lucas Oil"
url: https://www.desertcart.ro/products/5573910-lucas-oil-10020-upper-cylinder-lube-fuel-treatment-5-25
store_origin: RO
region: Romania
---

# Boosts fuel economy up to 25%+ Cleans & lubricates entire fuel system Prevents rust & corrosion for engine longevity Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment - 5.25 fl oz.

**Brand:** lucas oil
**Price:** 63 Lei
**Availability:** ✅ In Stock

## Summary

> ⛽ Power up your ride, save green, and leave the gunk behind!

## Quick Answers

- **What is this?** Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment - 5.25 fl oz. by lucas oil
- **How much does it cost?** 63 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/5573910-lucas-oil-10020-upper-cylinder-lube-fuel-treatment-5-25)

## Best For

- lucas oil enthusiasts

## Why This Product

- Trusted lucas oil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Engine Armor Protection:** Neutralizes harmful contaminants and prevents rust to extend engine life.
- • **Total Fuel System Detox:** Eliminates deposits in injectors, carburetors & combustion chambers for peak performance.
- • **Power & Acceleration Boost:** Enhances fuel flow to unlock smoother, stronger engine response.
- • **Fuel Efficiency Game-Changer:** Experience up to 25% better MPG and save at the pump.
- • **Universal Fit, Ultimate Convenience:** Works seamlessly with gasoline & diesel engines—your all-in-one tune-up in a bottle.

## Overview

Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment is the #1 rated fuel additive designed for both gasoline and diesel engines. This 5.25 fl oz formula cleans and lubricates the entire fuel system, improves fuel economy by up to 25%, boosts power and acceleration, and protects engine components from rust and corrosion. Compatible with all vehicle types, it’s a simple, effective tune-up solution trusted by over 24,000 users with a 4.8-star rating.

## Description

A powerful blend of oils and additives designed to increase power and fuel mileage and lower exhaust emissions through a more complete combustion. Enjoy a clean and efficiently functioning fuel system for improved performance and save money with enhanced fuel economy. Protect your engine and fuel system components from rust and corrosion while passing smog tests with ease. Can be added to your tank every 3,000 miles to avoid carbon and gunk buildup and prevent problems in your fuel system

Review: Happy with lucas oil fuel treatment - I recently tried out the Lucas Oil 10003 Fuel Treatment in my car, and I'm happy with the results. I noticed a smoother engine performance and improved fuel efficiency. I use it during long drives, and it has been quite handy. Plus, it's wallet-friendly. Oh, and the freezing temperature in my apartment didn't bother me while pouring it into my tank. Overall, a good buy for maintaining my vehicle's health.
Review: Works Great. - Excellent product. ‘99 BME E39 540/6 Speed. Was getting 16-17 mpg before. Now 25 mpg. Is it worth the $, technically yes because it cleans injectors.. great value for the money as well as the performance.

## Features

- The world’s #1 fuel additive for both gasoline and diesel engines
- A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
- Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
- Improves fuel economy by burning excess exhaust emissions
- Increases power and acceleration by improving fuel flow and reducing deposit buildup
- Neutralizes sulfur and other harmful contaminants present in the fuel system
- Increases the life of pumps and injectors
- Prevents rust and corrosion, prolonging the life of engine and fuel system components
- Complies with federal low sulfur content requirements for diesel motor vehicles and non-road, locomotive and marine diesel equipment engines
- Safely replaces the need for lead in older engines without causing harmful effects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0006305RY |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #161 in Automotive ( See Top 100 in Automotive ) #3 in Fuel Additives |
| Brand | Lucas Oil |
| Brand Name | Lucas Oil |
| Compatible with Vehicle Type | Car |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 24,017 Reviews |
| Global Trade Identification Number | 00049807100209 |
| Included Components | automotive,fuel,flushes |
| Item Height | 1.23 inches |
| Item Type Name | Fuel Treatment |
| Item Weight | 3.2 Ounces |
| Liquid Volume | 155 Milliliters |
| Manufacturer | LUCAS OIL |
| Manufacturer Part Number | 10020 |
| Manufacturer Warranty Description | 30 Days |
| Package Information | Bottle |
| UPC | 049807400200 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car |

## Product Details

- **Brand:** Lucas Oil
- **Vehicle Service Type:** Car
- **UPC:** 049807400200
- **Automotive Fit Type:** Universal Fit
- **Global Trade Identification Number:** 00049807100209

## Images

![Lucas Oil 10020 Upper Cylinder Lube/Fuel Treatment - 5.25 fl oz. - Image 1](https://m.media-amazon.com/images/I/61nQy4nemAL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Questions & Answers

**Q: Will gas mileage increase**
A: Yes, I drive a 2020 Toyota Corolla SE and I race the engine a lot. I use this every time I do an oil change. My mileage is at 32k atm, but some gasolines I use aren't always the best. When I don't use Lucas my rpm when going on freeway speeds they sit at around 1,800 but when I use Lucas they drop down to about 1,000 rpm and it saves a lot of gas. Then again I keep up to date with the maintenance and I've been using Lucas since I got the car and this is my daily.

**Q: Would keeping this in the car in hot Texas heat be an issue?**
A: 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 .

**Q: Whats difference between this and the fuel treatment 5 oz**
A: Their is no difference other than the packaging

**Q: Will it help remove P0420 code?**
A: 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Happy with lucas oil fuel treatment
*by V***E on January 6, 2026*

I recently tried out the Lucas Oil 10003 Fuel Treatment in my car, and I'm happy with the results. I noticed a smoother engine performance and improved fuel efficiency. I use it during long drives, and it has been quite handy. Plus, it's wallet-friendly. Oh, and the freezing temperature in my apartment didn't bother me while pouring it into my tank. Overall, a good buy for maintaining my vehicle's health.

### ⭐⭐⭐⭐⭐ Works Great.
*by S***. on December 7, 2025*

Excellent product. ‘99 BME E39 540/6 Speed. Was getting 16-17 mpg before. Now 25 mpg. Is it worth the $, technically yes because it cleans injectors.. great value for the money as well as the performance.

### ⭐⭐⭐⭐⭐ Put a Tiger in Your Tank!
*by W***S on January 1, 2026*

Hold on to your hat! This stuff is incredible. First use: About 4 ounces in a full tank. No effect. Second Use: About 6 ounces; no noticeable difference. Third use: About 8 ounces in a full tank of gas. About half way through the third tank, the car turned into a veritable tiger. It absolutely screams off the line, without the earlier engine jump rise at the start. Smooth and fast. Very quick off stop lights and while passing. Much quieter, too. Like new. I have a 2007 Hyundai Azera 3.3L V6. This has been great engine, with only the valve cover gaskets and alternator replaced, beyond regular oil/tires/brakes. And the valve cover problems are a known issue with this engine and year. In fact, Hyundai replaced the gaskets on the Santa Fe using this 3.3L engine. (But not the Azera.)

## Frequently Bought Together

- Lucas Oil LUC10020 Fuel Treatment - 5.25 Oz, multi-colored
- Lucas Oil 10009 Transmission Fix - 24 Ounce, White
- Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

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**Shop now:** [https://www.desertcart.ro/products/5573910-lucas-oil-10020-upper-cylinder-lube-fuel-treatment-5-25](https://www.desertcart.ro/products/5573910-lucas-oil-10020-upper-cylinder-lube-fuel-treatment-5-25)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-27*