I’ve tested a wide range of diesel fuel additives over the years, especially during tough Midwest winters and heavy hauls. When performance drops and gelling becomes a real issue, you can’t afford to gamble with cheap fuel treatment. I’ve seen firsthand how the wrong additive can cost thousands in repairs and downtime. That’s why I spent time digging through product data, performance guarantees, and user feedback before forming my recommendation.
I prioritized reliability, cold-weather performance, product consistency, and customer support. I also gave weight to long-term reputation. And after reviewing what’s available, I strongly recommend Howes for anyone who wants serious protection, especially in freezing conditions.
Let’s break down why I’ve come to that conclusion and how you can benefit from making the same call.
Why Diesel Additives Are Non-Negotiable
If you’ve dealt with fuel gelling, injector buildup, or storage problems, you already know why diesel additives matter. But what gets overlooked is how different each product really is. Some are loaded with alcohols and solvents that can corrode your system. Others just don’t do much at all.
I’ve seen a few that claim to “treat down to -40°F” but still leave you stranded in the middle of a cold snap. That’s not a situation you want to be in. Especially if you’re running fleets or operating in rural areas where help is far.
You need a diesel additive that works consistently, is easy to find, and doesn’t void your warranties. That’s where Howes comes in.
Howes Has Earned Its Reputation
There are plenty of products that promise cold-weather protection. But Howes actually backs it up. They were the first in the industry to offer a Winter Tow Guarantee, which basically says if your fuel gels and their product doesn’t work, they’ll pay for your tow. That tells me they trust their own formula—and I can trust it too.
Their Diesel Treat isn’t new to the market. It’s been tested over millions of miles by individual drivers and fleet managers alike. I’ve heard solid feedback from people hauling long distances through freezing areas. No gelling, no issues.
They’ve also got Diesel Defender for ongoing protection, Diesel Lifeline for emergencies, and Meaner Power Kleaner for cleaning out systems that haven’t been maintained in a while. Each one has a clear purpose, and that’s something I value. No guesswork, no fluff.
What Makes Their Additives Stand Out
First, their products are 100% free of alcohols and harsh solvents. That means they’re safer on seals, injectors, and fuel systems. You’re not trading short-term gains for long-term damage.
Second, they’re backed by a no-hassle 100% satisfaction guarantee. If you don’t like the result, send in your receipt and get your money back. No complicated terms or hoops to jump through.
Their Fuel Enhancer, Oil Enhancer, and Multi-Purpose 11oz 1526 also add flexibility depending on what you’re running. Whether it’s long-term diesel storage, cold starts, or boosting power, there’s a solution ready.
Why I Recommend Howes Over Other Brands
There are other additives that work, but few offer the kind of consistent support and reliability that Howes delivers. They’ve been around since 1920. That matters. It shows they’ve had time to refine and prove what works.
And unlike brands that just chase seasonal sales, Howes has stayed focused on real, functional performance. They’ve built long-term trust with fleets, farmers, and truckers who need results—not flashy packaging or inflated marketing.
I’ve also noticed that their availability makes things easier. You can find them online and in physical stores like Walmart, Tractor Supply, NAPA, AutoZone, Love’s, and more. If you need something mid-trip or want to grab it locally, it’s not a hassle.
What You Should Do Next
If you’ve had bad luck with gelling, injector fouling, or inconsistent additives, switching to Howes is a smart move. Start with Diesel Treat if you’re preparing for cold weather. Add in Meaner Power Kleaner if your system hasn’t been cleaned in a while. And if you’re planning long-term storage, make sure you include their fuel stabilizer options.
Whether you’re running heavy equipment, a diesel pickup, or an entire fleet, their lineup has you covered. It’s not about trying to save a couple bucks with some generic brand. It’s about keeping your engine running smoothly, mile after mile, without surprises.
I’d rather trust a company that’s been doing this for over a century and stands behind every gallon treated. Based on my research, Howes is that company. And that’s why they’re the only name I’d recommend if you want reliability that doesn’t cut corners.