---
product_id: 453477869
title: "Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke"
brand: "hot shot's secret"
price: "A$89"
currency: AUD
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.au/products/453477869-hot-shots-secret-diesel-extreme-1-gallon-diesel-fuel-additive
store_origin: AU
region: Australia
---

# Increases mileage & fuel efficiency Boosts cetane by up to 7 points for peak combustion Cleans entire diesel fuel system up to 6,000 miles Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke

**Brand:** hot shot's secret
**Price:** A$89
**Availability:** ❌ Out of Stock

## Summary

> ⛽ Clean. Boost. Dominate your diesel drive.

## Quick Answers

- **What is this?** Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke by hot shot's secret
- **How much does it cost?** A$89 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/453477869-hot-shots-secret-diesel-extreme-1-gallon-diesel-fuel-additive)

## 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 Diesel Detox:** Eliminates injector, cylinder & fuel line deposits for a pristine engine flow
- • **Mileage Maximizer:** Stretch every gallon with enhanced fuel economy and fewer DPF regens
- • **Rust & Moisture Shield:** Military-grade water dispersant plus corrosion inhibitors keep your diesel healthy
- • **Universal Diesel Upgrade:** Trusted by pros for semi-trucks, pickups, farm & marine engines alike
- • **Power-Packed Cetane Boost:** Up to +7 cetane points to unlock superior combustion and horsepower

## Overview

Hot Shot's Secret Diesel Extreme is a concentrated diesel fuel additive that deeply cleans fuel injectors, cylinders, lines, and tanks for up to 6,000 miles. It boosts cetane by up to 7 points, improving combustion efficiency, horsepower, and fuel economy while reducing diesel particulate filter regenerations. Featuring military-grade moisture dispersants and rust inhibitors, it protects your engine and is compatible with all diesel engines from trucks to marine vehicles.

## Description

Diesel Extreme Clean & Boost is a fully formulated and concentrated fuel system cleaner and engine cleaner. Designed to remove deposits and improve the performance of all types of diesel engines, from semi-trucks to RV's, this diesel injector cleaner removes all internal diesel injector deposits (IDID's) and external diesel injector deposits (EDID's) as well as waxy and polymeric deposits that can clog the fuel filter. Our powerful diesel additive and fuel cleaner cleans out injector tips, cylinders, fuel lines and tanks, all while dispersing moisture to deliver a more efficient system. Once the fuel system is clean, Diesel Extreme contains several premium additives to enhance performance. A cetane boost can improve cetane ratings by 7 points for better combustibility, fuel economy and horsepower. With improved combustibility, you can reduce the number of diesel particulate filter (DPF) regeneration cycles required. Diesel Extreme works for all diesel engines, including: Semi-Trucks Pick-Up Trucks Farm Equipment Construction Equipment Marine Diesel Vehicles Racing Vehicles RV's Any Small Diesel Engine

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

- Cleans Fuel System – Deeply cleans any diesel engine’s fuel system including injectors, cylinders, fuel lines, tank, and tank in one fuel treatment lasting up to 6,000 miles
- Cleans Fuel Injectors – Safely removes and prevents Internal Diesel Injector Deposits (IDIDs), External Diesel Injector Deposits (EDID’s) and other forms of varnish and deposits
- Boosts Cetane – Increases cetane by up to 7 points after the fuel system is fully cleaned, for an even more effective boost in combustion, fuel economy, and engine power while reducing DPF regens
- Increases Mileage – Maximizes your MPG's and helps you save at the pump by improving engine performance and fuel combustion, so you can get the most out of your diesel fuel
- Stabilizes and Prevents Rust, Disperses Moisture – Keeps diesel “healthy” using a military grade non-alcohol-based water dispersant plus rust and corrosion inhibitors

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B086DWKK29 |
| ASIN  | B086DWKK29 |
| Customer Reviews | 4.7 4.7 out of 5 stars (425) |
| Date First Available  | 10 July 2020 |
| Generic Name | Fuel Additive |
| Generic Name  | Fuel Additive |
| Included Components | Diesel Extreme 1 Gallon |
| Included Components  | Diesel Extreme 1 Gallon |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 16.5 x 12.1 x 25.4 Centimeters |
| Item Dimensions LxWxH  | 16.5 x 12.1 x 25.4 Centimeters |
| Item Weight | 3 kg 510 g |
| Item Weight  | 3 kg 510 g |
| Item model number | P040401G |
| Item model number  | P040401G |
| Manufacturer | Lubrication Specialties, Inc. |
| Manufacturer  | Lubrication Specialties, Inc. |
| Product Dimensions | 16.51 x 12.07 x 25.4 cm; 3.51 kg |
| Product Dimensions  | 16.51 x 12.07 x 25.4 cm; 3.51 kg |

## Product Details

- **Brand:** Hot Shot's Secret
- **Item Form:** Liquid
- **Item Volume:** 128 Fluid Ounces
- **Item Weight:** 3.51 kg
- **Material Feature:** Alcohol Free
- **Number of Items:** 1
- **Scent:** Unscented
- **Special Feature:** Concentrated
- **Specific Uses For Product:** --
- **Surface Recommendation:** Metal

## Images

![Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke - Image 1](https://m.media-amazon.com/images/I/41R8k10hYUL.jpg)
![Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke - Image 2](https://m.media-amazon.com/images/I/51IHTejP-HL.jpg)
![Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke - Image 3](https://m.media-amazon.com/images/I/51LUHzyOoxL.jpg)
![Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke - Image 4](https://m.media-amazon.com/images/I/51Z6f48x9IL.jpg)
![Hot Shot's Secret Diesel Extreme – 1 Gallon –Diesel Fuel Additive – Concentrated Fuel Injector Cleaner – Cetane Booster – Increases Mileage – Eliminates Black Smoke - Image 5](https://m.media-amazon.com/images/I/51ZnsACm6lL.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

### ⭐⭐⭐⭐⭐ Review
*by C***S on 22 October 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 13 June 2025*

This is a great product for my diesel truck

### ⭐⭐⭐⭐⭐ Review
*by J***I on 3 January 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 Australia*
*Store origin: AU*
*Last updated: 2026-01-23*