Doc's Diesel x Hot Shot's Secret Interval Diesel Fuel/Oil Treatment + The Diesel Treatment Kit

16 Reviews
Regular price$71.99
  • 3rd-Party Tested
  • Free USA Shipping Over $99*
  • In stock, ready to ship
  • Inventory on the way

Doc's Diesel & Hot Shot's Secret are partnering to bring their #1 stiction removal product and Fuel Treatment to the Doc's Family with Interval Oil Treatment and Interval Fuel Treatment, Powered By Hot Shot's Secret. These additives will be a a great addition to your Doc's Diesel Filter maintenance plans!

- Interval Fuel Treatment
- Cleans cylinders, fuel lines, Tank, and disperses water/moisture 
- Reduces need for DPF Regeneration Cycles up to 50%
- Improves Throttle Response & Power
- Protects against Rust & Corrosion, and stabilizes fuel
- Boosts Cetane up to 7 pts
- Fully Formulated to get rid of IDIDs

- Interval Oil Treatment 
- Protects Turbos, Injectors, & Rings
- Removes 50% more stiction than competitors (verified by 3rd party ASTM Testing)
- Reduces Wear up to 62%
- Cleans & Lubricates
- Quicker Turbo Spool Times - Improves Fuel Economy

- The Diesel Treatment

Treatment Plan Interval Fuel Treatment: Use 8oz of Interval Fuel Treatment per 20 gallons of diesel fuel. Use every 6,000 miles. Include in your schedule Doc's Diesel maintenance plan and in conjunction with Doc's Diesel The Diesel Treatment

Treatment Plan Interval Oil Treatment: Use 2oz of Interval Oil Treatment per 1 qt of oil. Include in your scheduled maintenance plan and add to your oil with every oil change for best results

Treatment Plan The Diesel Treatment: Premium: 1oz/25 gallon or 16oz/400 gallons Performance: 2 oz/25 gallon or 16oz/200 gallons 

How much is shipping?

We offer Free Shipping over $99 on all orders within the contiguous United States. Expedited shipping is available for an additional charge. Alaska, Hawaii, and Canada will have shipping fees.

Where does Doc's Diesel Ship to?

We ship to the U.S. and Canada! For Canada orders, any taxes, duties, or customs fees are the responsibility of the buyer.

How long will it take to get my Doc's Diesel Filters?

We handle orders in 1-2 business days (Most of the time in less than 24 hours if ordered on a week day). Depending on location, U.S. orders will arrive between 3-5 business days from your order.

Canada orders typically arrive within 7-11 days.

Where is my order?

If you have not received your confirmation email us so we can get everything sorted out ASAP.

If you received a confirmation but no shipment email, we are still working on your order. Don't hesitate to email if you would like more information and we'd be happy to check on your order. Please Include your order # in the email.

For Tracking information, it will be in your shipment email. Check the tracking # first or the latest updates. Doc's Diesel, just like you are at the mercy of shipping companies after a shipment leaves our warehouse. If there's been an issue with shipment we will happilly work with you to figure out where the order is and what we can do to help. Once again you can reach out to sales@docsdiesel and include your order # in the email. Thank You.

If you are unhappy with your purchase for whatever reason and it's within 30 days from your purchase you can return your diesel filters back to us. Item has to be in new condition. Email us and we will email you a return slip. Once filters are received, we will refund your money (minus price of return shipping)  within 2-4 business days. We will refund to your original form of payment. 

To start a return email

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industry leading aftermarket diesel filters


Aftermarket Filters - OEM Form, Fit & Function.


Free shipping on all Continental USA orders over $99. Expedited Shipping Available.


If it doesn’t fit, we will offer you a replacement or a refund (*some conditions apply).


Doc's Diesel Filters are spec'd and designed to meet or exceed the quality/performance of the original filters (OEM's) that come in your vehicle. Doc's premium grade media filter paper used on all Doc's Filters is what sets Doc's above the rest.

3rd Party Tested ✓

We wanted to go one step further in customer trust by providing,SAE J1985 3rd Party Testing of our parts.We did a full upstream and downstream efficiency testing along with a single pass efficiency test method. Our main fuel filters have been 3rd party tested, and as we get more testing we will be reporting the results.

Customer Reviews

5.0 Based on 16 Reviews
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Filter Reviews:

Top notch service and products

I've been very happy with the products and it's super easy to navigate the website to order. Recently I had to contact customer service due to shipping damage issues with UPS. Doc's took my feedback and sent me replacement itmes and threw a some swag in the box to show appriciation for being a customer. I continue to use them for my diesel vehicles. Thanks Doc's.


Made in China

Never again. I seek products made in the USA.


Goodorer stuff

Seems to help this my fuel economy and overall health of my fuel and oil system will need to do more testing