

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.
🔥 Unlock Extreme Diesel Power & Protection!
Hot Shot's Secret Diesel Extreme Fuel Additive is a concentrated, unscented formula designed to clean, lubricate, and protect diesel fuel systems. It boosts cetane by up to 7 points for improved combustion, reduces injector deposits, and prevents rust with military-grade inhibitors. Easy to use at 8 oz per 20 gallons, it treats up to 320 gallons per gallon and is highly rated by professionals for enhancing engine performance and longevity.






| ASIN | B086DWKK29 |
| Best Sellers Rank | #1,030 in Automotive ( See Top 100 in Automotive ) #6 in Diesel Additives #8 in Fuel System Cleaners |
| Brand | Hot Shot's Secret |
| Brand Name | Hot Shot's Secret |
| Customer Reviews | 4.7 out of 5 stars 5,803 Reviews |
| Included Components | Diesel Extreme 1 Gallon |
| Item Form | Liquid |
| Item Type Name | Fuel Additive |
| Item Volume | 128 fluid ounces |
| Item Weight | 7.7 pounds |
| Manufacturer | Lubrication Specialties, Inc. |
| Material Feature | Unscented |
| Material Features | Unscented |
| Model Number | P040401G |
| Number of Items | 1 |
| Part Number | P040401G |
| Scent | Unscented |
| Size | 128 Fl Oz (Pack of 1) |
| Special Features | Concentrated Fuel Injector Cleaner |
| Specific Uses For Product | Diesel Fuel Additive |
| Surface Recommendation | Vehicle |
| UPC | 722512381513 |
| Unit Count | 128 Fluid Ounces |
| Warranty Description | 100% Money Back Guarantee |
J**I
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.
H**S
As Good As LM Super Diesel Additive but Better Value
This stuff is amazing! I thought nothing could beat Liqui Moli Super Diesel Additive but this does on value for the money and the torque increase is as equal to SDA. I use this in my mint condition 2015 Golf TDI. I did not think anything could quiet my engine but after this I can barely hear it on idle yet it screams when I drop the foot pedal. I’ve used Costco’s premium diesel religiously for years but this significantly increased torque. It states to run it every 6,000 miles that’s every 12th tank of gas in my TDI. I use about 4.2 oz per tank of gas so it’s dirt cheap. My main goal is to keep carbon deposits at bay so the performance increase is legendary. I added about 2-5 mpg on average getting getting 50 mpg with gas saving driving including speed limit on freeway and coasting. When I’m done with this bottle I’m going to try the every day version and I’ll report back.
J**T
Better then advertised
My mechanic found rusted Fuel injectors, and said at some point they would need to be replaced. I tried this in the interim and the first bottle worked immediately. So now I add half a bottle to a full tank every time I fill up and I have had no problems. This does not mean the rusted fuel line will go away with this product.
P**R
Diesel Steriods !!!
Fantastic product. Put it in my Kubota after I finished re-hauling the entire fuel system because of bad diesel at the pump using this product was the last step and it made a big difference in the sound of the tractor after circulating for less than a half an hour, the most potent and highest quality product for diesel that I have ever seen
F**R
Worked on restricted injectors on old 15kw gen set
Works as advertized
L**E
I use it in my boat
This is good stuff.
P**E
It Works
Been using this for years. Never had a fuel issue. My Ram with Cummins had 350k. Running like a scolded dog.
B**D
03 LB7 Duramax
Rotate this with Hot Shots EDT. 03 LB7 Duramax. Truck runs smoother and better fuel mileage. Recommend for any older diesel truck.
A**R
Good product and resonabely priced
Seems to have worked very good in my baby duramax.
D**L
Importado dos EUA e é ótimo.
Muito bom para carros antigos movidos a Diesel S-500. Limpa bem a linha do combustível e o recipiente já vem com as medidas a serem colocadas. Vale a pena investir.
J**N
Great product
Works like a charm.
C**T
Finally an additive that you can tell is working, great stuff!
Wow! Actually works van does not rough idle and flew through mot with no mention of emissions like was the problem last year…buy it! But DO NOT spill it…it STINKS, wear gloves when using and don’t inhale fumes!
G**Z
Funciona
Excelente aditivo y funciona y limpia como lo explican, muy bueno
Trustpilot
2 weeks ago
3 weeks ago