Doc's Diesel x Hot Shot's Secret Interval Fuel Treatment (16oz)

Regular price$14.95
  • 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 selling diesel additive to the Doc's Family with Interval Fuel Treatment, powered by Hot Shot's Secret. Interval Fuel Treatment is formulated with safe and powerful injector cleaner - just just to clean common coking deposits, but also the hard to get rid of IDIDs (Internal Diesel Injector Deposits). Removing these deposits improves your Diesel performance and protect your injectors from failing. 

- 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

Treatment Plan: Use 8oz of Interval Fuel Treatment per 20 gallons of diesel fuel. For Use every 6,000 miles! Take control of your maintenance plans. Simply pour right in to your take when you filling up you Diesel Fuel. For best results use in conjunction with Doc's Diesel The Diesel Treatment.

FOR USE IN your Powerstroke, Cummins, Duramax, and EcoDiesel Engines.

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.