Somewhere inside Cummins’ global publishing machinery, a precision-engineered exhaust catalyst has taken a wrong turn and emerged from the translation department wearing a laundry coat. Not an ordinary garment, either. This one belongs to a component that operates at high temperatures inside a heavy-duty natural-gas engine. Whether it can survive a spin cycle remains unclear.
Welcome back to Trotters Independent Translators. Yesterday, the TITs apparently turned $1.14 billion into $114 billion in Cummins’ translated financial results. Today, they’ve left the accounts department for emissions engineering. Their latest assignment involves the X15N’s three-way catalyst, which Cummins says needs no scheduled servicing. Unfortunately, the article describing that achievement has developed maintenance problems of its own.
Two details prompted this sequel. An apparent editing note has travelled from the English copy into several language editions. In Serbian, a recognised catalyst term has reportedly become something from the laundry aisle. These are failures of communication, not evidence of faulty engineering. But they make a rather good case for better proofreading.
The Catalyst That Went To The Laundrette
On 6 November 2026, Cummins published How Does The Cummins X15N Three-Way Catalyst Work Without Maintenance? The article explains how its natural-gas engine treats exhaust gases. The catalyst targets nitrogen oxides, hydrocarbons and carbon monoxide without diesel exhaust fluid, diesel particulate-filter cleaning or active regeneration. That matters to operators because it removes several routine tasks linked to diesel aftertreatment.
In simple terms, exhaust passes through a ceramic honeycomb. Its channels carry a thin, porous coating that holds the active catalyst materials. These materials help turn exhaust pollutants into less harmful gases and water. Engineers call the coating a washcoat. It’s an established term with a precise role, not an item from a wardrobe.
Yet TCAP’s 6 November monitoring found a peculiar Serbian rendering. The word washcoat reportedly became “mantilom za veš” – roughly, a coat for laundry. Somewhere between the ceramic substrate and the Serbian newsroom, an emissions component seems to have acquired outerwear. The catalyst may operate at high temperatures, but no tumble-dryer instructions were required.
The mistake is easy to explain. Split washcoat into everyday English words and you lose its technical meaning. It’s much like translating horsepower into instructions for strapping a horse to an engine. The words look familiar, but the engineering concept has gone missing. Cummins built an advanced component; its Serbian explanation appears to have sent that component shopping for outerwear.
The Editorial Note With A Passport
The English original reportedly brought its own baggage. TCAP’s monitoring recorded “precious materials[RH2.1]” in a paragraph about the catalyst’s coating. That bracketed tag looks like a comment left over from editing. Its exact purpose remains unknown, so we cannot say who inserted it or why. Either way, it seems an odd guest in a finished technical article.
The same marker also reportedly appears in German, Brazilian Portuguese and Serbian editions. [RH2.1] has apparently acquired more stamps than some frequent flyers. Unlike the Serbian washcoat problem, this one seems to begin in the English source. If a master copy carries stray text, regional versions can reproduce it perfectly. The publishing system then turns one mistake into a remarkably well-travelled passenger.
That distinction matters because the two errors appear to arise at different stages. The Serbian wording concerns technical meaning getting lost during translation. The unexplained marker, however, seems to have originated before that process began. A global publishing network can distribute accurate information with impressive speed, but it can spread mistakes just as efficiently.
None of this tells us who approved the copy. Nor does it prove that a machine translated it or that one editor overlooked every edition. The internal workflow remains unknown. What matters is the reported result: a stray marker appears to have survived publication and travelled abroad. That raises a fair question about the checks applied to finished articles.
Quality Control At The End Of The Conveyor Belt
Cummins has good reasons to publish across many languages. Its customers run trucks, engines and power systems around the world. A global newsroom helps the company explain products to those customers. However, a translation is only useful when it preserves the meaning of the original.
The two reported errors point to different weak spots. One concerns a possible editing note that survived the English approval process. The other concerns a specialist term that apparently lost its meaning in Serbian. Neither establishes a problem with the X15N engine itself. Both concern the quality of the information that Cummins provides about it.
Technical articles are not decorative brochures. Fleet operators may read them to understand servicing needs, running costs and emissions equipment. If a catalyst coating turns into clothing, the copy has ceased to do its job. An engineer should not need to rescue a sentence from the laundry basket.
Of course, a large company cannot avoid every typo. Publishing material across numerous markets creates plenty of opportunities for mistakes. Yet there is a difference between an awkward phrase and a technical explanation that loses its meaning. Readers should not have to consult the English original to establish what a component actually does.
The issue is not whether Cummins can produce flawless prose every time. It’s whether the company takes reasonable care to ensure that its international articles remain clear and accurate. An efficient publishing system offers little comfort if nobody catches the errors before they reach the public.
Maintenance-Free Does Not Mean Indestructible
The maintenance claim itself deserves care. Cummins says the X15N’s catalyst has no scheduled service or replacement interval during its intended life. That doesn’t make the whole engine maintenance-free. Nor does it mean the catalyst can withstand every operating fault.
In a 25 June 2026 article, Cummins stressed regular ignition-system care and spark-plug replacement. It also said prolonged misfires could damage the catalyst. Its 23 October FAQ covered much of the same technology. The 6 November article therefore offers no newly discovered engineering contradiction.
Nor should a clumsy translation become an allegation about defective hardware. The catalyst may work exactly as the engineers designed it. The problem lies in the words used to explain it, not the machinery itself. Cummins has built a component that should need little intervention; its international newsroom copy seems to require rather more.
That contrast supplies much of the comedy. The company’s engineers have developed equipment intended to operate for years without routine catalyst servicing. Meanwhile, the accompanying explanation apparently struggled to cross a language barrier without acquiring an unexpected garment and an unexplained editorial passenger.
The engineering aims to minimise unnecessary intervention. The publishing process appears to have benefited from rather more of it.
The TITs Have Another Successful Outing
Yesterday’s TITs episode involved translated financial figures on an absurd scale. Today we have an editing marker with a passport and a washcoat dressed for laundry. The stakes aren’t the same, and we shouldn’t pretend they are. A mistranslated coating is not a billion-dollar financial error.
Still, both episodes show why global publishing needs a final check. Financial figures must retain their numbers, while engineering terms must retain their meaning. A sound English source is valuable, but that alone cannot guarantee an accurate translation. When the source itself contains a stray marker, the trouble can begin before a translator even starts.
Cummins’ engineering teams deserve accurate descriptions of their work. So do the customers reading them. Nobody needs to invent a scandal to find this episode ridiculous. A company can build a catalyst for years of service, then send its description to the laundrette. The contrast does all the heavy lifting.
That leaves only the career prospects of the TITs. If Cummins’ engineering ingenuity has left the TITs with no catalysts to maintain, perhaps an opportunity in the chandelier-maintenance market might fall upon them.
Lee Thompson – Founder, The Cummins Accountability Project
Sources
- Cummins – How Does The Cummins X15N Three-Way Catalyst Work Without Maintenance? (6 November 2026)
- Cummins – Serbian Edition Of The X15N Catalyst Article
- Cummins – Three-Way Catalyst FAQs: What Fleets Should Know (23 October 2026)
- Cummins – Profitable Uptime And Lower TCO For Natural Gas Aftertreatment (25 June 2026)
- DieselNet – Catalytic Coating And Materials
- TCAP – Del Boy Does The Accounts: How $1.14 Billion Became $114 Billion