Hot Shot's Secret Diesel Extreme 32 oz – Treats 80 Gallons – Concentrated Diesel Fuel Additive, Fuel System Cleaner and Injector Cleaner, Restores Engine Performance

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.

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.

Works exactly like advertised! Boosted my trucks power and MPG while simultaneously decreasing regens. I use every 6K-8K miles to keep injectors clean and would advise anyone who wants to keep their diesel truck running smooth for the long run to do the same! You will not find a better product at this price point!

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

This is a must-have for diesel trucks.

Was recommended by a local diesel repair business. This stuff works as advertised. I use it in my entire farm fleet.

Diesel fuel for finicky diesels is getting tougher and tougher for me to find. Lots of expensive junk fuel out there. My Jeep Eco-diesel is a beast, but have to be watchful for good fuel. This additive has helped huge. I’ve used it for (3) years, and even tho it doesn’t suggest it, I use it in every fill up. No problems in 100K, and it get better than advertised MPG, and performance. Wouldn’t leave home without it!

Have been using this for years. Works great and keeps your engine purring

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.

Super fast postage, used it only once so far but seems to do as it describes

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.

We have found our RAM ecoDiesel to be a little particular about the diesel we put through it. We had no trouble at all with the two diesel stations we usually use, but after a tank from a supplier we don't usually use but had to in a pinch, we noticed changes in the horsepower and the particulates in our exhaust. It took a few tanks from our regular diesel provider, and the use of this clean and boost, to get our engine back to normal. It's running normally again, and we are not having issues with heavier than normal particulates in the exhaust. We are much more particulat about the quality of diesel we put in it now, but still use the clean and boost every so often just to be "clean" things up a bit. If you have issues with the quality of your diesel, this product from Hot Shots' really helped us out a lot.

I usually don't believe in this stuff much, find it's mostly a waste of money. Had an old diesel sit for 9 years, ran rough as heck obviously on its old stale diesel fuel. Tossed half a bottle of this in, and filled the last half of the tank with fresh diesel and it runs better than when I parked it. Definitely buying a few more of this stuff.