--- title: "Diesel Fuel Doctor" description: "Diesel Fuel Doctor provides innovative and cost effective products and services for customers needing fuel maintenance or a fuel quality control program." featured_image: "https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/h4_slider3.jpg?fit=1920%2C786&quality=89&ssl=1" url: "https://dieselfueldoctor.com/" date_modified: "2026-10-28T14:20:37-04:00" --- REQUEST A DEMO Fuel Cleaning / Polishing Using mobile fuel polishers, fuel is pulled with a suction hose, sent into the filtration systems on the polisher, and returned to the tank via return hose. Get A Quote WHAT'S IN THE BOTTOM OF YOUR TANK? Tank Maintenance Check and document the quality of seals, vents, caps, and access points. This keeps external debris (water, dirt, pollen, etc.) out of your tanks to keep the quality of fuel! Get A Quote Fuel Additives & Solutions Full spectrum fuel catalyst to include: Fuel stabilizer, Combustion catalyst, Detergent, Surfactant, Dispersant, Lubricity enhancer, Corrosion inhibitor. Specialty Additives available as well, including entrained water removed and biocide. Get A Quote Field Testing, Lab Reporting & Analysis Once the job is complete, samples of your fuel are photographed and analyzed by specialists. These reports include, but are not limited to, haze rating, water and particulate detection, and optional extensive lab reporting available. Get A Quote window.SR7 ??={};SR7.PMH ??={}; SR7.PMH["SR7_15_1"] = {cn:100,state:false,fn: function() { if (window._tpt!==undefined && window._tpt.prepareModuleHeight !== undefined) { _tpt.prepareModuleHeight({id:"SR7_15_1",el:[756,756,756,756,756],type:'standard',shdw:'0',gh:[756,756,756,756,756],gw:[1170,1170,1024,778,480],vpt:['-100px','-100px','-100px','-100px','-100px'],size:{fullWidth:true, fullHeight:false},mh:'0',onh:0,onw:0,bg:{color:'{"orig":"transparent","type":"solid","string":"transparent"}'}}); SR7.PMH["SR7_15_1"].state=true;} else if(SR7.PMH["SR7_15_1"].cn-->0) setTimeout( SR7.PMH["SR7_15_1"].fn,19);}};SR7.PMH["SR7_15_1" ].fn(); --- ![image000000(7)(1)](https://dieselfueldoctor.comwp-content/uploads/2023/05/image00000071.jpg) ## It's Who We Are... Diesel Fuel Doctor provides innovative and cost effective products and services for customers needing fuel maintenance or a fuel quality control program. DFD is environmentally friendly. Started in 2005 and fully incorporated in 2006, we are one of the oldest full time, fully committed, fuel maintenance companies in the United States.  Diesel Fuel Doctor maintains the largest distribution network of service providers and fuel maintenance equipment in the world. Originating in the Great Lakes Basin and operating primarily in the continental 48 states, we have grown internationally with offices now open in Australia as well. The company continues to grow as it provides exceptional service, quality products, and industry knowledge to its customers in the stand-by power, mining, rail, trucking, shipping, recreational boating, RV, and bio-diesel industries. [ ** More About DFD ](#Services) --- ### 20+ Years Experience With over 20 years of experience in the oil & gas industry, we guarantee the best quality service and solutions. ### Safety & Environment For us, occupational safety & environmental stewardship is a top priority and go hand in hand. We believe it's all worth it! --- 1000+ - HAPPY CUSTOMERS 100000+ - SOLUTIONS DELIVERED 100K+ - LAB REPORTS 1+Billion - GALS. FUEL POLISHED --- ## Service We Provide We're the type to jump right in to help you solve your fuel issues. ![Fuel Samples of Contaminants](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2020/12/Fuel-Additives_01.jpeg?fit=1008%2C756&quality=89&ssl=1)[](https://dieselfueldoctor.com/service/fuel-additives/) ![category icon](https://dieselfueldoctor.com/wp-content/uploads/2020/12/cat-icon3.png) ### [Fuel Additives](https://dieselfueldoctor.com/service/fuel-additives/) Full spectrum fuel catalyst to include: fuel stabilizer, combustion catalyst, detergent, surfactant, dispersant, lubricity enhancer, corrosion inhibitor. Specialty additives are available as well, including. [ Service** ](https://dieselfueldoctor.com/service/fuel-additives/) ![mobile field-testing-lab-reporting-analysis](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2020/12/Field-Testing_02.jpeg?fit=1008%2C756&quality=89&ssl=1)[](https://dieselfueldoctor.com/service/field-testing-lab-reporting-analysis/) ![paper](https://dieselfueldoctor.com/wp-content/uploads/2021/03/c_paper.svg) ### [Field Testing, Lab Reporting & Analysis](https://dieselfueldoctor.com/service/field-testing-lab-reporting-analysis/) Once the job is complete, samples of your fuel are photographed and analyzed by specialists. These reports include, but are not limited to, haze. [ Service** ](https://dieselfueldoctor.com/service/field-testing-lab-reporting-analysis/) ![Tank Maintenance - Generator](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Data-Center_02.jpeg?fit=1008%2C756&quality=89&ssl=1)[](https://dieselfueldoctor.com/service/tank-maintenance/) ![category icon](https://dieselfueldoctor.com/wp-content/uploads/2020/12/cat-icon6.png) ### [Tank Maintenance](https://dieselfueldoctor.com/service/tank-maintenance/) Check and document the quality of seals, vents, caps, and access points. This keeps external debris (water, dirt, pollen, etc.) out of your tanks. [ Service** ](https://dieselfueldoctor.com/service/tank-maintenance/) ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2020/12/Construction_01.jpeg?fit=1008%2C756&quality=89&ssl=1)[](https://dieselfueldoctor.com/service/fuel-polishing/) ![Service Icon](https://dieselfueldoctor.com/wp-content/uploads/2020/04/service_icon3.png) ### [Fuel Cleaning / Polishing](https://dieselfueldoctor.com/service/fuel-polishing/) Using mobile fuel polishers, fuel is pulled with a suction hose, sent into the filtration systems on the polisher, and returned to the tank. [ Service** ](https://dieselfueldoctor.com/service/fuel-polishing/) --- ## Latest Industries Served We love what we do and get to do it on the road. Here's just a few pics we've taken along the way. ![category icon](https://dieselfueldoctor.com/wp-content/uploads/2020/12/cat-icon-all.png) All Projects Agriculture Construction Data Centers & Generators Fuel Contamination Oil & Gas Tank Maintenance ![Oil-Gas\_01](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Oil-Gas_01-420x430.jpeg)[](https://dieselfueldoctor.com/lq-project/oil-and-gas/) ### [Oil & Gas](https://dieselfueldoctor.com/lq-project/oil-and-gas/) [ ](https://dieselfueldoctor.com/lq-project/oil-and-gas/) ![Data-Center\_01](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Data-Center_01-420x430.jpeg)[](https://dieselfueldoctor.com/lq-project/data-centers-and-generators/) ### [Data Centers & Generators](https://dieselfueldoctor.com/lq-project/data-centers-and-generators/) [ ](https://dieselfueldoctor.com/lq-project/data-centers-and-generators/) ![Generators\_03](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Generators_03-420x430.jpeg)[](https://dieselfueldoctor.com/lq-project/generator-tank-cleaning/) ### [Generator Tank Cleaning](https://dieselfueldoctor.com/lq-project/generator-tank-cleaning/) [ ](https://dieselfueldoctor.com/lq-project/generator-tank-cleaning/) ![Tank-maintenance\_01](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2020/12/Tank-maintenance_01-420x430.jpg)[](https://dieselfueldoctor.com/lq-project/tank-maintenance/) ### [Tank Maintenance](https://dieselfueldoctor.com/lq-project/tank-maintenance/) [ ](https://dieselfueldoctor.com/lq-project/tank-maintenance/) ![Agriculture\_01](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Agriculture_01-420x430.jpg)[](https://dieselfueldoctor.com/lq-project/agricultural-equipment/) ### [Agricultural](https://dieselfueldoctor.com/lq-project/agricultural-equipment/) [ ](https://dieselfueldoctor.com/lq-project/agricultural-equipment/) ![Construction\_01](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2020/12/Construction_01-420x430.jpeg)[](https://dieselfueldoctor.com/lq-project/construction/) ### [Construction](https://dieselfueldoctor.com/lq-project/construction/) [ ](https://dieselfueldoctor.com/lq-project/construction/) [ View All Projects ](https://dieselfueldoctor.com/dfd-projects/) --- ### DFD Network --- ![Cummins](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/cummins-logo_grey.png?fit=106%2C100&quality=80&ssl=1) ![Atlas Fuel Services](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/AtlasFuelServices_logo_grey.png?fit=289%2C100&quality=80&ssl=1) ![Caterpillar](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Caterpillar-Logo_grey.png?fit=549%2C100&quality=80&ssl=1) ![Evergee Energy](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/06/Evergee-Logo_grey-1.png?fit=350%2C114&quality=80&ssl=1)[ ](http://www.evergee.us/) ![Atlas Oil](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Atlas-Oil_logo_grey.png?fit=377%2C100&quality=80&ssl=1) ![Predictive Maintenance & Lab Analysis](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/beaker-logo_grey.png?fit=93%2C100&quality=80&ssl=1) ![ANAB Accredited ISO](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/iso-logo_grey.png?fit=124%2C100&quality=80&ssl=1) ![Michigan Boating Industries Association](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/michiganboatingindustasso_logo_grey.png?fit=232%2C100&quality=80&ssl=1) ![PM Technologies](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/PM-Tech_logo.png?fit=350%2C100&quality=80&ssl=1) --- ## What’s in the bottom of your tank? ### Do you know? Do you want to? **You should!** --- ### FAQ of Our Customers ***What's in your tank? Do you know? Do you want to?*** **We do!** We get a lot of questions and there are some that are asked a lot in this business. Here are just a few... I think I have water in my fuel, how can I tell? Pulling a fuel sample from the bottom of the tank is the most accurate way to know. Water is heavier than fuel!! My equipment/engine stopped or is sluggish, can you help? **Probably! ** You might want to check your fuel filters. If they are a mess, the problem is almost certainly in your tank! Does algae really grow in diesel? **Nope!** Algae is a nickname for degraded fuel. **SIDENOTE:** Microbial growth (mold, yeast, & fungus) can grow in some biodiesel and certainly in water in fuel. What is this slimy garbage in my filters? Could be a couple of things: Very likely, it is microbial growth. - If it is cold, it could be biodiesel contents or your fuel gelling. - If the problem goes away as temperatures rise, it is most likely your fuel gelling. What is this stuff that looks like coffee grounds? Mostly, we call that non combustible particulate matter (sand, dust, rust, maybe a bug or a few hundred).  All fuel tanks are vented. Whatever is going on outside your fuel tank, very often makes its way inside too! ### Let's Chat! Hey! Thanks for stopping by, if you got a question you need answered or a problem you want solved, drop us some info below and we'll be sure to get back at you right away! Make A SelectionGet A QuoteEmergency IssueAsk Us A Question Fuel Type: Diesel #1Diesel #2Bio-DieselOther Tank Capacity: Current Fuel Level: 25%50%75%100% FullOther Type of Tank: \[select tank-type "Sub-base" "Bulk" clear\_on\_hide\] Tank Location: \[select tank-location "Above Ground" "Below Ground" "Roof" "Basement" "Parking garage" "Other" clear\_on\_hide\] Is Tank Fed By Another Bulk Fuel Source? \[select tank-feed "Yes" "No" "Unsure" clear\_on\_hide\] History On Tank? Ease of Street Access: Please Verify The Exact Site Address: Site Contact: Site Contact Info: 120V Electrical Outlet On-Site? YesNoUnsure Unmanned Site? YesNo Lockbox Code or Key Required? YesNo Submit Δ --- ## DFD Team DFD started as a family company and expanded with each team member becoming an extension of our family. Meet some of the DFD Team below. --- ![Neal Miller](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2025/02/neal_web.jpg?fit=800%2C600&quality=89&ssl=1) ### Neal Miller Grandpa [**](mailto:neal@dieselfueldoctor.com) ![Torre Miller](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/torre_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Torre "El Jefe" Miller Principal Started Diesel Fuel Doctor on July 1st, 2006. Was an independent representative prior to that. Lover of family, old dogs, old boats, and old cars. Always curious, but pretty content. [**](https://www.linkedin.com/in/torre-miller-2b391912/) [**](mailto:torre@dieselfueldoctor.com) ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/lex_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Alexis "Lexi" Miller CFO Usually found on the tail end of the job. All AR/AP will go through Lexi! In her spare time, she enjoys riding horses with family and friends! Lexi started at DFD in 2015. [**](https://www.linkedin.com/in/alexis-miller-343597140/) [**](mailto:alexis@dieselfueldoctor.com) ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/steph_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Stephanie Ambler COO Stephanie, or as we like to call her "First Born", has been with DFD since 2019 and handles all routing of the DFD Team. Doxie mom of 3, her summers are spent at the lake house, nature loving. [**](https://www.linkedin.com/in/stephanie-ambler-b1b65912a/) [**](mailto:stephanie@dieselfueldoctor.com) ![Mike Butts](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/mike_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Mike Butts General Manager [**](mailto:mike@dieselfueldoctor.com) ![Justin Morin](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/justin_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Justin Morin CMO / CIO Justin is a true tech-guru and an amazing Creative! Combined with his knowledge in "everything" digital, along with his passions for design, brand identity and social media engagement - Justin makes DFD look sharp! [**](https://www.linkedin.com/in/justin-morin313/) [**](mailto:justin@dieselfueldoctor.com) ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/david_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### David Cherry National Production Manager / Technician David, or as we like to call him "Captain America", is often in the field pulling samples and polishing fuel. ** [**](mailto:david@dieselfueldoctor.com) ![Brian Meredith](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/brian_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Brian Meredith Southwest Territory Manager / Technician Brian can be found in the field taking samples, polishing fuel, and building relationships along the way. [**](https://www.linkedin.com/in/brian-meredith-544409147/) [**](mailto:brian@dieselfueldoctor.com) ![Forest Quick](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/forest_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Forest Quick Technician [**](mailto:forrest@dieselfueldoctor.com) ![Tyler Baker](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/tyler_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Tyler Baker Technician [**](mailto:tyler@dieselfueldoctor.com) ![Casey King](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/casey_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Casey King Arizona / Technician [**](mailto:casey@dieselfueldoctor.com) ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/erik_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Erik Allswede Technician [**](mailto:erik@dieselfueldoctor.com) ![Mackenzie Williams](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/kenzie_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Mackenzie Williams Reporting / Lab Analysis Everything lab related is handled by Mackenzie. From taking pictures, building reports, adding lab results, and building dashboards for the customers, Mackenzie will be involved throughout the job. [**](mailto:mackenzie@dieselfueldoctor.com) ![Shelby Meredith](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2026/02/shelby_web_26.jpg?fit=370%2C278&quality=89&ssl=1) ### Shelby Meredith Texas | Office Administrator Shelby, can be found helping prep the team by making work orders and assisting with administration support. She feels fortunate to be a wife, mother, and loves spending time with her family outdoors hiking. [**](mailto:shelby@dieselfueldoctor.com) ![Hank Muntz](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/Hank_01h.jpg?fit=800%2C600&quality=89&ssl=1) ### Hank Muntz Outside Sales [**](mailto:hank.muntz@gmail.com) --- ### Join Our Team We are looking for talented & driven people to come work with us. [ ** Available Positions ](https://dieselfueldoctor.com/careers/) [![DFD After Hours Logo](https://dieselfueldoctor.com/wp-content/uploads/2024/09/DFD-After-Hours_logo.png)](/dfd-after-hours/) [ ** View DFD After Hours ](https://dieselfueldoctor.com/dfd-after-hours/) --- [![DFD - Fuel For Thought Identifier](https://dieselfueldoctor.com/wp-content/uploads/2024/11/Fuel-For-Thought_Identifier-lg.png)](/category/fuel-for-thought/) Fuel For Thought is designed to be more than a “Freshman class” in fuel quality control.  We’re going to present some technical stuff in small bites.  We hope you will find it both useful and entertaining. [ ** Are You Ready? ](/category/fuel-for-thought/) --- ## Testimonials We’ve met a lot of cool people and worked for a lot of great businesses along the way. “Your two technicians who work at our facility were top-notch guys, very thorough & professional. I spent some time with them, and they took me through the polishing process of each component of the system and how the equipment works. Very interesting and specialized service you are providing." ** ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/DFD_fav.png?resize=100%2C100&quality=80&ssl=1) ##### Facilities Manager ** ** ** ** ** Memorial Health | Lincoln Memorial Hospital “Our visit this week was a great one! Your team arrived on-time, as scheduled, and drew diesel samples from our 500 gallon emergency generator fuel tank as well as our 4 – 395 gallon fuel tanks on-site. They labeled each sample and removed all their equipment. Your team was very professional and proficient." ** ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/DFD_fav.png?resize=100%2C100&quality=80&ssl=1) ##### Catalina Jimenez ** ** ** ** ** JLL, a P&G Business Partner "Over the years, our relationship with Diesel Fuel Doctor has flourished, and we are the better for it." ** ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/DFD_fav.png?resize=100%2C100&quality=80&ssl=1) ##### Ricky Vasquez ** ** ** ** ** VP - Data Center Facilities, Tierpoint We can count on Diesel Fuel Doctor taking care of our customers no matter the location or problem. We use them for all our tank maintenance needs alongside any diesel fuel issues we encounter. Torre and his team have always had our backs. ** ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/DFD_fav.png?resize=100%2C100&quality=80&ssl=1) ##### Jayme Oyen ** ** ** ** ** Atlas Fuel Services All cleaned up and no problems any longer with my equipment. Diesel Fuel Doctor was able to isolate my tank issue and fixed/treated my fuel for water contamination. ** ![](https://i0.wp.com/dieselfueldoctor.com/wp-content/uploads/2023/05/DFD_fav.png?resize=100%2C100&quality=80&ssl=1) ##### Anonymous ** ** ** ** **