--- product_id: 163977365 title: "Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive" brand: "the fuel ox" price: "$39.70" currency: USD in_stock: true category: "The Fuel Ox" url: https://www.desertcart.us/products/163977365-ultra-concentrated-otr-diesel-fuel-treatment-and-combustion-catalyst-over store_origin: US region: United States of America --- # Extends regen cycles 5-8% MPG boost Protects injectors & pumps Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive **Brand:** the fuel ox **Price:** $39.70 **Availability:** ✅ In Stock ## Summary > 🚛 Drive smarter, save bigger—fuel your fleet’s future today! ## Quick Answers - **What is this?** Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive by the fuel ox - **How much does it cost?** $39.70 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/163977365-ultra-concentrated-otr-diesel-fuel-treatment-and-combustion-catalyst-over) ## Best For - the fuel ox enthusiasts ## Why This Product - Trusted the fuel ox brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Water? No Problem:** Demulsifier technology traps water before it harms your fuel system. - • **Maximize Your Miles:** Experience up to 8% improved fuel economy on every highway haul. - • **One-Shot Convenience:** Ultra-concentrated dosing treats 120 gallons with a single 3oz bottle—no guesswork. - • **Engineered Protection:** Advanced lubricity additives shield injectors and pumps from ULSD wear. - • **Cut Downtime, Boost Efficiency:** Fewer diesel particulate filter regens mean longer routes without forced stops. ## Overview Fuel Ox OTR Diesel Additive is a premium ultra-concentrated fuel treatment designed for over-the-road diesel engines. It enhances combustion efficiency to boost fuel mileage by 5-8%, reduces costly diesel particulate filter regens, protects injectors and pumps from wear caused by ultra-low sulfur diesel, and removes water contamination. Its simple one-shot dosing system treats up to 120 gallons per bottle, making it an essential upgrade for long-haul drivers and fleet operators seeking performance and reliability. ## Description Buy Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive: Fuel Additives - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Fewer Regens, Less Downtime: the combustion catalyst promotes earlier ignition and a more complete burn, so less soot reaches the DPF. Long-haul drivers often see regen cycles stretch out, cutting the forced stops that eat into a route. - More Miles Per Gallon: complete combustion means less diesel exits the tailpipe unburned. Fleets and owner-operators treating every fill-up report fuel economy gains of roughly 5-8% across highway routes. - Protects Injectors and Pumps: ULSD strips out natural lubrication, so Fuel Ox OTR's lubricity additive recoats upper cylinders and injectors while detergents clear gum and varnish from fuel lines and tanks. - Pulls Water Out of the Fuel: the demulsifier separates water suspended in diesel so filters catch it before it reaches injectors. Useful for trucks fueling at multiple stops or sitting idle between hauls. - Simple One-Shot Dosing: this concentrated 3oz bottle treats up to 120 gallons of diesel, roughly 1oz per 40 gallons, so owner-operators and fleet crews can dose a tank without measuring out multiple pours. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07WJW2QFL | | Best Sellers Rank | #2,135,281 in Automotive ( See Top 100 in Automotive ) #655 in Fuel Additives | | Brand | The Fuel Ox | | Customer Reviews | 3.9 3.9 out of 5 stars (8) | | Date First Available | August 14, 2019 | | Item Weight | 3.2 ounces | | Manufacturer | The Fuel Ox | | Manufacturer Part Number | footr | | Product Dimensions | 4 x 2 x 2 inches | ## Images ![Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive - Image 1](https://m.media-amazon.com/images/I/41Z1TIshcPL.jpg) ![Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive - Image 2](https://m.media-amazon.com/images/I/81kO1qbKHiL.jpg) ![Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive - Image 3](https://m.media-amazon.com/images/I/81V3lRD0HYL.jpg) ![Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive - Image 4](https://m.media-amazon.com/images/I/715hKkQZwsL.jpg) ![Ultra-Concentrated OTR Diesel Fuel Treatment & Combustion Catalyst | Over-The-Road Strength; Lubricates, Boosts Mileage, Cuts Regens - Fuel Ox OTR Diesel Additive - Image 5](https://m.media-amazon.com/images/I/61OelvI+eBL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/163977365-ultra-concentrated-otr-diesel-fuel-treatment-and-combustion-catalyst-over](https://www.desertcart.us/products/163977365-ultra-concentrated-otr-diesel-fuel-treatment-and-combustion-catalyst-over) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-27*