We heard that this product only needs to be used twice a year, does anyone know if it says this on the bottle?

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

Would this product be suitable for a 1.6 Diesel engine in our family car?

I use it it a 1.9 TDI and 2 7.3 diesels.

Has anyone used this with a TDI with DEF / Urea?

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

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?

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.

Hot Shot's Secret P040416Z Diesel Extreme Clean and Boost - 16 fl. oz.

Hot Shot's Secret P040416Z Diesel Extreme Clean and Boost - 16 fl. oz.

Product ID: 273971657

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Details

Brand
Hot Shot's
Item volume
473
Item weight
0.45 Kilograms
Number of Items
1
Unit count
16 Fluid

🔥Boosts cetane by up to 7 points

⚙️Cleans entire fuel system

🛡️Military-grade rust & corrosion protection

Description

🔥 Unlock your diesel engine’s hidden power and efficiency!

EFFORTLESS APPLICATION - Just 8 oz. per 20 gallons—easy fuel tank pour-in, no hassle needed ⛽
RUST MOISTURE SHIELD - Advanced water dispersant with military-grade inhibitors to prevent corrosion 🛡️
TOTAL FUEL SYSTEM DETOX - Eliminates injector deposits & varnish for peak engine health ⚙️
DPF REGENERATION REDUCER - Fewer diesel particulate filter cycles for smoother, uninterrupted drives 🚛
POWER PACKED CETANE BOOST - Up to 7 points higher cetane for sharper combustion & more horsepower 🔥

Hot Shot's Secret Diesel Extreme Clean & Boost is a concentrated 16 fl. oz. additive engineered to clean and lubricate diesel fuel systems, eliminate internal and external injector deposits, boost cetane by up to 7 points, and protect against rust and moisture. Compatible with all diesel engines, it improves fuel economy, engine power, and reduces diesel particulate filter regenerations for a smoother ride.

Specifications

ASIN	B00IUGFZE2
Brand	Hot Shot's Secret
Brand Name	Hot Shot's Secret
Contains Liquid Contents?	Yes
Customer Reviews	4.6 out of 5 stars 779 Reviews
Global Trade Identification Number	00837654914335
Has liquid contents	Yes
Included Components	16 OZ Bottle
Item Type Name	Hot Shot's Secret DIESEL EXTREME, 16 OZ
Item Volume	473 Milliliters
Item Weight	0.45 Kilograms
Item volume	473 Milliliters
Item weight	0.45 Kilograms
Manufacturer	Hot Shot's Secret
Number of Items	1
UPC	837654914335
Unit Count	16 Fluid Ounces
Unit count	16 Fluid Ounces

Reviews

G**C

Diesel extreme

13.11.2024

T**R

I'm a believer

26.07.2025

O**H

Don’t believe in this stuff but….

5.08.2025

B**Y

Worked well in my twin Cummins diesel turbos on my boat

19.12.2022

A**R

Good stuff

15.08.2025

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