---
product_id: 724893296
title: "Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance"
brand: "hot shot's secret"
price: "€ 299.86"
currency: EUR
in_stock: true
reviews_count: 5
category: "Hot Shot's Secret"
url: https://www.desertcart.pt/products/724893296-hot-shots-secret-diesel-extreme-1-gallon-concentrated-fuel-system
store_origin: PT
region: Portugal
---

# Boosts cetane by up to 7 points Military-grade rust & moisture dispersal Cleans & protects entire fuel system Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance

**Brand:** hot shot's secret
**Price:** € 299.86
**Availability:** ✅ In Stock

## Summary

> 🔥 Drive cleaner, drive smarter — unleash diesel power like never before! ⛽

## Quick Answers

- **What is this?** Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance by hot shot's secret
- **How much does it cost?** € 299.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/724893296-hot-shots-secret-diesel-extreme-1-gallon-concentrated-fuel-system)

## Best For

- hot shot's secret enthusiasts

## Why This Product

- Trusted hot shot's secret brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Maximize Your MPG:** Up to 7-point cetane boost for cleaner, more efficient combustion that saves fuel and money.
- • **Trusted by Diesel Pros:** Highly rated with 4.7 stars and proven to extend engine life and reduce costly repairs.
- • **Rust & Moisture Defense:** Advanced non-alcohol formula with military-grade inhibitors stabilizes rust and disperses moisture for reliable operation.
- • **Simple, Smart Maintenance:** Just 8 oz per 20 gallons keeps your diesel engine running smooth—easy to use, hassle-free protection.
- • **Engineered for Total Fuel System Care:** Deep cleans valves, pumps, pistons, and injectors to restore peak engine performance and longevity.

## Overview

Hot Shot's Secret Diesel Extreme is a concentrated diesel fuel additive designed to clean, lubricate, and protect the entire fuel system. It boosts cetane by up to 7 points for improved combustion efficiency, reduces injector deposits, and includes military-grade rust and moisture inhibitors. Easy to use with 8 oz per 20 gallons, it enhances fuel economy, restores engine performance, and is trusted by professionals with a 4.7-star rating.

## Description

Product Description Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Fuel Injector Cleaner - Improves Fuel Economy and Restores Engine Performance Ingredients --

Review: Does it do everything it says ?? I don’t know. Shipping was fast , product received in good condition and we use it every few tanks , cheap insurance for the price of trucks nowadays.
Review: This is a great product for my diesel truck

## Features

- Fuel System Cleaning: Hot Shot Secret Diesel Extreme is designed to thoroughly clean, lubricate and protect all components of the engine and fuel system including valves, pumps, rings, pistons, and upper cylinders
- Fuel Injector Cleaning: Designed to eliminate and prevent internal diesel injector deposits (IDID), external diesel injector deposits (EDID), and other stubborn varnish and sediment buildup to keep the engine running smoothly
- Boost Cetane: Increased cetane (up to 7 points), more efficient combustion process, improved fuel economy and improved engine output. It also reduces the frequency of DPF playback to ensure a smoother driving experience
- PROBLEM SOLVING: Non-alcohol-based water disperser reinforced with military grade rust and corrosion inhibitors. Stabilize rust and disperse moisture effectively. This product improves overall engine performance
- EASY TO USE: With a simple application of 8 ounces every 20 gallons, this product is easy to use. Simply pour into the fuel tank at the next fill or every 6,000 miles
- DRIVED BY SCIENCE: Our products are designed to solve problems, extend the life of your equipment and improve efficiency. Nothing will be left unless we know that our building is absolutely the best

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B086DWKK29 |
| Customer Reviews | 4.7 4.7 out of 5 stars (430) |
| Date First Available  | July 10, 2020 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | P040401G |
| Manufacturer  | Lubrication Specialties, Inc. |
| Product Dimensions  | 16.51 x 12.07 x 25.4 cm; 3.51 kg |

## Product Details

- **Brand:** Hot Shot's Secret
- **Item Form:** Liquid
- **Material Feature:** Unscented
- **Scent:** Unscented
- **Specific Uses For Product:** Diesel Fuel Additive

## Images

![Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance - Image 1](https://m.media-amazon.com/images/I/71hnqNpe-9L.jpg)
![Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance - Image 2](https://m.media-amazon.com/images/I/71WRENiK3eL.jpg)
![Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance - Image 3](https://m.media-amazon.com/images/I/61T4iXBWOXL.jpg)
![Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance - Image 4](https://m.media-amazon.com/images/I/81v94dUEjZL.jpg)
![Hot Shot's Secret Diesel Extreme 1 Gallon Concentrated Fuel System Cleaner Diesel Fuel Additive Injector Cleaner - Improves MPG and Restores Engine Performance - Image 5](https://m.media-amazon.com/images/I/8139HD4HC-L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: We heard that this product only needs to be used twice a year, does anyone know if it says this on the bottle?**
A: So?? Which came first?!  My bottle says 6,000 miles… this bottle is about 10 months old. 
I’d really like to know if the manufacturer recommends 6k or 6 months! 
Thanks

**Q: Would this product be suitable for a 1.6 Diesel engine in our family car?**
A: I use it it a 1.9 TDI and 2 7.3 diesels.

**Q: Has anyone used this with a TDI with DEF / Urea?**
A: It is specifically designed for restoring the performance of diesel engines so yea it will be fine in your TDI just make sure you follow instructions don't mix it too strong or your car will run like a raped ape for a minute

**Q: I want to use this in a diesel parking heater to try and remove some of the carbon buildup inside the burn chamber. Do you think this would do that?**
A: It is very unlikely that using Diesel Extreme will remove carbon that is already built up in your heater. It is best used as a preventative to combat the amount of soot/carbon build up. Another note is that unfortunately, Diesel Extreme is very odorous and using it in an open heating element may cause some unpleasant odors.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by C***S on October 22, 2025*

Does it do everything it says ?? I don’t know. Shipping was fast , product received in good condition and we use it every few tanks , cheap insurance for the price of trucks nowadays.

### ⭐⭐⭐⭐⭐ Review
*by H***A on June 13, 2025*

This is a great product for my diesel truck

### ⭐⭐⭐⭐⭐ Review
*by J***I on January 3, 2026*

This pairs very well with my 2018 International 4300 Durastar box truck. It has hit the 600,000 mile club and keeps going strong. I have started noticing my fuel tank guage no longer reads correctly and almost took a stab at replacing the fuel assembly unit for a few hundred. I went ahead and got some of this HotShot Secret and poured a 1/4th or 1 Qt for my 70 gallon tank. Beleive it or not, my fuel guage had restored its range after one tank. This pattern remained for about 12,000 miles until it started happening again. Used another 1/4th and got another 15,000 miles. The pattern is slowly going away so this shows that the tank is in fact getting cleaned out which was ongoing with affecting my sensor. MPG has not seen a rise. If anything it has seen a dip from 9.1 down to 8.9. But if it means burning clean with injectors and such, this is not a loss. Effective and great savings for the gallon. Looks good and easy carry size. No stickiness to worry about.

## Frequently Bought Together

- Hot Shot's Secret Diesel Extreme 1 Gallon, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance
- Hot Shot's Secret - HSSEDT01G Everyday Diesel Treatment - EDT 1 Gallon - Treats Up to 3,200 Gallons
- Hot Shot's Secret LX4 Lubricity Extreme 1 Gallon, Fuel Treatment for All Engines, Gasoline & Diesel Additive, Fuel Additive Increases Lubricity, Protects & Extends Fuel System Life

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-16*