---
product_id: 18375827
title: "Hot Shot's Secret Diesel Extreme 16oz, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance"
brand: "hot shot's secret"
price: "€ 38.46"
currency: EUR
in_stock: true
reviews_count: 13
category: "Hot Shot's Secret"
url: https://www.desertcart.sk/products/18375827-hot-shots-secret-diesel-extreme-16oz-concentrated-fuel-system-cleaner
store_origin: SK
region: Slovakia
---

# Boosts cetane by up to 7 points Military-grade rust & corrosion inhibitors Cleans & protects injectors and fuel system Hot Shot's Secret Diesel Extreme 16oz, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance

**Brand:** hot shot's secret
**Price:** € 38.46
**Availability:** ✅ In Stock

## Summary

> 🔥 Unlock your diesel’s hidden power with every tank!

## Quick Answers

- **What is this?** Hot Shot's Secret Diesel Extreme 16oz, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance by hot shot's secret
- **How much does it cost?** € 38.46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/18375827-hot-shots-secret-diesel-extreme-16oz-concentrated-fuel-system-cleaner)

## 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

- • **Deep Fuel System Detox:** Eradicate stubborn injector deposits and varnish to restore peak engine performance.
- • **Trusted by Diesel Pros:** Join thousands of drivers who rely on Hot Shot’s Secret to extend engine life and MPG.
- • **Rust & Moisture Defense:** Military-grade inhibitors shield your engine from corrosion and moisture damage.
- • **Simple, Smart Maintenance:** Just 8 oz per 20 gallons keeps your fuel system clean with minimal effort.
- • **Maximize Engine Efficiency:** Boost your diesel’s cetane rating for sharper combustion and smoother rides.

## Overview

Hot Shot's Secret Diesel Extreme is a concentrated fuel system cleaner and diesel additive designed to boost cetane by up to 7 points, thoroughly clean injectors and fuel system components, and protect against rust and moisture with military-grade inhibitors. Easy to use at 8 oz per 20 gallons, it restores engine performance, improves fuel economy, and reduces costly maintenance, making it a top choice for diesel professionals and enthusiasts alike.

## Description

desertcart.com: Hot Shot's Secret Diesel Extreme 16oz, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance : Video Games

Review: Trust worthy hotshot - Just purchased a diesel and wanted to keep it running well. This stuff works amazing, and can feel the difference. I would store it in the bed. Bottle leaks some and smells strong. Would not recommended storing in cab. Size of bottle is good for 1-2 fuel ups.
Review: Love This Stuff - 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.

## Features

- CLEANS FUEL SYSTEM: Hot Shot’s Secret Diesel Extreme is designed to thoroughly clean, lubricate, and safeguard all components of your engine & fuel system, such as valves, pumps, rings, pistons, and upper cylinders.
- CLEANS FUEL INJECTORS: Designed to eliminate & prevent the buildup of Internal Diesel Injector Deposits (IDIDs), External Diesel Injector Deposits (EDID's), as well as other stubborn varnish and deposits, this will keep your engine running smoothly.
- BOOSTS CETANE: Increases cetane (up to 7 points), for a more efficient combustion process, improved fuel economy, & increased engine power. It also helps reduce the frequency of DPF regenerations, ensuring a smoother driving experience.
- FIXES ISSUES: Non-alcohol-based water dispersant, fortified with military-grade rust and corrosion inhibitors, stabilizes & prevents rust, effectively dispersing moisture, this product ensures to improve overall engine performance.
- EASY TO USE: With a simple application of 8 oz. for every 20 gallons, this product is easy to use! Just pour it into your fuel tank during your next fill up or every 6,000 miles
- POWERED BY SCIENCE: Our products are engineered to resolve issues, make equipment last longer and improve efficiency. Nothing leaves our building with our name on it unless we know it is absolutely the BEST it can be.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00IUGFZE2 |
| Best Sellers Rank | #891 in Automotive ( See Top 100 in Automotive ) #5 in Fuel System Cleaners #11 in Diesel Additives |
| Brand | Hot Shot's Secret |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,576) |
| Date First Available | March 7, 2014 |
| Item Weight | 15.8 ounces |
| Item model number | P040416Z |
| Manufacturer | Lubrication Specialties, Inc. |
| Manufacturer Part Number | P040416Z |
| Model | P040416Z |
| Product Dimensions | 7 x 2.5 x 2.5 inches |
| Special Features | Not_Performance_Used |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Hot Shot's Secret
- **Item Volume:** 473 Milliliters
- **Number of Items:** 1
- **Special Feature:** Not_Performance_Used
- **Unit Count:** 16.0 Fluid Ounces

## Images

![Hot Shot's Secret Diesel Extreme 16oz, Concentrated Fuel System Cleaner, Diesel Fuel Additive, Injector Cleaner - Increases MPG & Restores Engine Performance - Image 1](https://m.media-amazon.com/images/I/71wpNpLqZQL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Trust worthy hotshot
*by G***L on January 9, 2026*

Just purchased a diesel and wanted to keep it running well. This stuff works amazing, and can feel the difference. I would store it in the bed. Bottle leaks some and smells strong. Would not recommended storing in cab. Size of bottle is good for 1-2 fuel ups.

### ⭐⭐⭐⭐⭐ Love This Stuff
*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.

### ⭐⭐⭐⭐⭐ Increible producto
*by D***I on November 21, 2025*

I’ve been using 4 type of diesel addictive for over a year. Diesel extreme every 4k or 5k miles. Everyday diesel treatment on each fuel charge. Winter defense on winter season. Winter diesel anti-gel when temperatures get below 10F. I have a more power, less black smoke and just look how my exhaust valve are. It’s a Detroit 60 series that works every day with 390k miles after overhaul. My truck is part our my family, feed my family and it deserves the best to keep running and running. I love this product

## Frequently Bought Together

- Hot Shot's Secret P040416Z Diesel Extreme Clean and Boost - 16 fl. oz. (Packaging May Vary), Amber
- Hot Shot's Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS)
- Hot Shot's Secret Original Stiction Eliminator 32 Fluid Ounce Bottle

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-27*