In an industry where diesel emissions systems are often viewed with hatred, Power Service Products Diesel Injector and DPF Flush promises to be a game changer.
It could be a simple way to make diesel engines cleaner, produce better MPGs and far more reliable. And that even applies to trucks that have deleted emissions equipment and have opened up the headaches of trying to find the right tunes or mechanics to work on non-emissions equipped diesels.
Jessica Crabtree, Director of Technical Services for Power Service Products, Inc., and also a Chemist explained how it works in the company’s Weatherford laboratory. The company’s latest innovation — the Diesel Injector and DPF Flush — was designed to restore performance, reduce emissions and was recently proven to dramatically improve fuel economy during testing on light-duty pickups, heavy-duty trucks and a commercial semi-truck.
“People aren’t necessarily happy with all this advanced emissions equipment,” Crabtree said. “It affects engine performance, and it can be a headache. We can’t get away from it, but we can make it work more efficiently — and cause a lot fewer problems.”
Cleaning Up Diesel’s Image
Diesel owners have long complained that modern emissions systems, such as diesel particulate filters (DPFs) and selective catalytic reduction (SCR) systems, can hurt reliability and add maintenance costs.
However, there is no getting away from diesel fuel for most long-haul jobs in the U.S. Diesel fuel is the most efficient fuel source we have to move cargo. It is estimated just 10-15% of diesel fuel is treated with diesel fuel additives aimed at making diesel fuel restore lubricity, since switching to ultra low sulfur diesel fuel, and keep injectors clean causing much of the reliability concerns using products like Power Service Products sells.
The diesel additive business is potentially a multi-billion dollar industry.
Power Service’s new flush product aims to be another product they offer for diesel engines to keep them out of the shop and back on the road. Unlike their other products you should use on a more consistent basis, this is a monthly additive or in an emergency situation to get the truck back up and running.
In fact, it was created in response to a customer’s request for an emergency solution to keep trucks from the tens of thousands of repair bills at diesel repair shops.
“The Diesel Injector and DPF Flush can reduce the frequency of regens, improve fuel economy, keep your injectors clean, and reduce emissions,” Crabtree explained. “By keeping emissions from accumulating in the particulate filter, everything stays cleaner and runs smoother. You don’t have to regen as often, you use less DEF, and less diesel overall — which hopefully saves you money in the long run.”
For fleet operators working in strict emissions zones — such as ports or major metro areas — the implications could be significant. Reduced NOx levels and fewer regens translate directly to less downtime, lower costs, and better compliance.
The Science Behind the Flush
To prove its effectiveness, Power Service turned to a recognized industry benchmark: the DW10B injector cleanliness test.
“The DW10B is an industry standard test,” Crabtree said. “Anybody who makes a diesel fuel injector cleaner uses this to measure how well it works. We run a Peugeot engine set up on a bench with tons of sensors. It’s not in a vehicle — it’s all controlled so we can get repeatable, measurable data.”
The test intentionally introduces contaminants to simulate injector fouling, allowing scientists to see how quickly a cleaner can restore lost power. “You run 32 cycles of startup, running, and cool-down to measure power loss and recovery,” Crabtree said. “When we tested our Diesel Injector and DPF Flush, we lost almost 6% power in the dirty-up phase. Once we added the detergent (the product), we recovered to baseline power within one hour — one cycle of run time.”
For comparison, Crabtree noted that Power Service’s long-standing Diesel Kleen product — designed for continuous use — typically requires about four hours of runtime to achieve similar cleaning results.
“What’s so amazing about this product is just the speed at which it works,” she said. “It’s a straight shot to your injectors. It’s going to clean them up so rapidly — a true flush. Not only did we regain that 6% power, we actually saw a 2% gain over baseline, meaning the engine was performing better than new.”
Real-World Results: From Light-Duty to Long-Haul
Laboratory numbers are one thing, but Crabtree emphasized that the company also put the product to work in the real world — testing both light-duty pickups and heavy-duty semis under consistent conditions.
In a 2023 GMC Sierra 1500 with the 3.0L Duramax diesel, the company ran five tanks of untreated fuel to establish a baseline of about 25 mpg. Then, one tank was treated with Diesel Injector and DPF Flush, followed by four untreated tanks to monitor sustained results.
“After that single treated tank, we saw an average of about 28 miles per gallon,” Crabtree said. “That’s roughly an 11% improvement in fuel economy with just one treatment.”
She cautioned that results will vary but said the consistency across tests was impressive. “We claim up to a 10% improvement, which I still think is incredible. That’s 10% less diesel fuel you have to use.”
Touring the facility in this truck, I saw the results on the screen and discussed how the Banks iDash showed the regen cycles were changed allowing for longer times before regen occurred saving DEF and improving MPG.
Even more striking were the results from the company’s heavy-duty testing. Using a 2024 Peterbilt 579, which regularly hauls raw materials between Houston and Weatherford, Texas, Power Service measured fuel economy over hundreds of miles under identical conditions — same route, same loads, same fuel station.
“This truck was getting 5.9 mpg for five tanks of untreated fuel,” Crabtree said. “After treating one tank and running four more untreated, the average jumped to 8.9 mpg — almost a 40% improvement. And because that route and load are so consistent, those results are extremely significant.”
The improvement was not only immediate but sustained. “You can feel that it’s working almost instantly,” Crabtree added. “Unlike anti-gels or stabilizers where you have to wait for the right conditions to see a difference, this product gives immediate, tangible results.”
Cleaner Emissions, Longer Life
Improved performance isn’t just about horsepower or fuel savings — it also means cleaner emissions and potentially longer-lasting equipment.
Crabtree said Power Service measured up to a 50% reduction in NOx emissions in its light-duty and heavy-duty testing, and in one case — the GMC 2500 — reductions reached as high as 90%.
“Not everybody’s going to see numbers that high, but overall, cutting NOx in half is huge,” she said. “When you reduce NOx and improve combustion, you’re also keeping soot from building up in the particulate filter. That means fewer regens, less fuel used for regeneration and less stress on the system.”
The company’s team even went so far as to physically measure how much soot was removed from a DPF.
“When we started removing and weighing filters before and after treatment, we saw a 40-gram reduction in soot,” Crabtree said. “That might not sound like much, but soot doesn’t weigh very much — that’s a significant amount. And to remove that much without a regen cycle is incredible.”
The benefit, she said, goes beyond cleanliness. “Keeping your fuel system clean keeps your truck reliable. Diesel fuel is the consumable you use the most, so keeping it as clean and consistent as possible is key to having everything work as it’s designed to.”
Sustained Performance and Practical Use
While the flush produces quick results, Crabtree emphasized that regular maintenance is still important.
“We recommend using the flush once a month,” she said. “It’s not going to last forever, but the results are sustained. Ideally, you’d treat with the flush, then use our Diesel Kleen in between tanks. That’s how you get the best fuel economy and keep everything in top shape.”
She added that the product’s effectiveness goes beyond what the lab can measure. “It’s just really cool to have a product where you can feel the difference in one hour,” she said. “You don’t have to wait for a season or wonder if it worked — you know right away.”
Turning a Corner for Diesel Reliability
For years, truck owners have been frustrated about emissions systems robbing their engines of power and longevity. But Crabtree believes products like Diesel Injector and DPF Flush could mark a turning point.
“When everything’s clean — injectors, DPF, combustion chambers — your truck just works the way it’s supposed to,” she said. “And when it works as designed, it’s more reliable, more efficient and better for everyone.”
If the results hold up in more widespread use, diesel owners frustrated with costly regens, clogged filters, and falling fuel economy might finally have something to celebrate — a chemical solution engineered not just to clean, but to keep diesel engines running cleaner, longer and stronger than ever.
It is starting to hit some stores now and you can purchase it on Amazon.com.
Pricing varies by size and currently it is about $20 for a full-size truck.
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