Diesel Extreme Clean and Boost - Cleans Tanks, Boosts Cetane

In this review the Diesel Extreme Clean and Boost is evaluated as a single can solution for diesel fuel system maintenance. It is aimed at owners of diesel trucks, vans and equipment who want to reduce smoke, improve idle smoothness and recover lost fuel economy without a mechanical service. The single biggest reason to buy is its combined formula: it cleans the tank, lines and injectors while also removing free water and stabilizing fuel, which customers consistently report leads to quieter operation and measurable fuel mileage gains.

Key Features

• Clean Out The Tank: The formula loosens and removes deposits from the tank so later fuel reaches the pump cleaner, reducing buildup over time.
• Lines And Injectors: Cleans fuel lines and injectors to help restore spray pattern and improve combustion efficiency for smoother engine performance.
• Remove Free Water: Emulsifies and removes free water from the fuel system to protect injectors and fuel pumps from corrosion and poor combustion.
• Stabilize Fuel: Stabilizes stored diesel fuel to reduce degradation and maintain performance during seasonal storage or infrequent use.
• Boost Cetane: Raises cetane to improve ignition quality, which customers note reduces smoke and improves cold-start behavior.
• Lubricate Fuel System: Adds lubricity to protect the fuel pump and injectors, extending component life in modern low-sulfur fuels.

Who It's For

The product is best for diesel vehicle and equipment owners who want a maintenance additive that addresses multiple common issues at once: deposits, water contamination, fuel stability and low lubricity. It is particularly useful for drivers noticing increased smoke, rough idle or a recent drop in fuel economy and who prefer a simple tank-add treatment instead of immediate mechanical service.

Those who should look elsewhere include owners with confirmed mechanical failures such as bad injectors or a failing high-pressure fuel pump; additives can help symptoms but will not replace required repairs. Also, if a vehicle has been misfueled or has severe contamination, professional service is recommended before relying solely on an additive.

Pros & Cons

Pros

• Effective multi-action formula that cleans tank, lines and injectors while stabilizing and improving cetane.
• Customers report smoother idle, reduced smoke and quieter engine operation after use.
• Improves fuel efficiency for some users, with real-world gains reported by owners.
• Protects fuel system components by removing free water and adding lubricity.

Cons

• Not a substitute for mechanical repairs when injectors or pumps are failing; results depend on the severity of existing deposits.
• Benefits may vary vehicle to vehicle; some users may see smaller mileage gains than others.

Specifications

Product Name	Diesel Extreme Clean and Boost
Brand	Hot Shot's Secret
Volume	64 fl. oz.
Main Actions	Clean tank, lines and injectors; remove free water; stabilize fuel
Performance Additives	Boosts cetane and lubricates pump and injectors
Category	Fuel System Cleaner

Our Verdict

The Diesel Extreme Clean and Boost is a practical, cost-effective additive for diesel owners who want to address common fuel system issues without immediate shop time. It combines cleaning, water removal, stabilization and lubricity in one treatment, making it good value for routine maintenance and for users seeking improved engine smoothness and reduced smoke.

Frequently Asked Questions

How do you use it?
Pour the contents into the fuel tank according to package directions so the formula mixes with fuel and treats the tank, lines and injectors during normal operation.

Will it fix a noisy fuel pump?
It can reduce noise by restoring lubricity and cleaning components, but a mechanically failing pump will still require repair or replacement.

Is it safe for modern diesel engines?
Yes, it is designed to lubricate injectors and pumps and to stabilize diesel, making it suitable for modern diesel engines when used as directed.