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Catalyzing better diesel performance

Test Results & Case Studies

Over 100 110 results from over 23 countries!
​Customer tests - Private labs - Government labs

There are A BUNCH of test results and case studies on this page!

They are from a variety of sources: labs, customers, etc. Some are old, some are new, all are factual & non-biased.

We have the original reports and data for many of them, if you really want to get into the weeds!

We invite you to review these until you get tired and then call us to get similar savings for your operation.

A major open-pit mine in Latin America tested five Cat 797 trucks over seven months and achieved 5.85% fuel savings — a <1-month payback and $5.8M annual savings.
An Australian construction company ran side-by-side tests on Cat D8 dozers and 16M graders, recording 15% and 9% savings respectively — a six-month ROI.
A major U.S. quarry company has used Rentar since 2008, seeing 6.5–7.8% fuel savings and up to 50% longer engine life.
Lafarge pilots in North America on Cat 980H loaders and 777D haul trucks achieved 14–16% fuel efficiency improvements.
Heidelberg Cement’s European quarry test improved fuel efficiency by 14.7% using control and test groups.
Rogers Group USA deployed Rentar nationwide, achieving 7.3% average fuel reduction across its fleet.
A Caterpillar dealer in Brazil saw 5.7% fuel savings on D11 dozers.
A large U.S. quarry company achieved 4.7% savings on Tier 4 engines.
Covanta Energy, after EPA protocol testing, installed Rentar fleetwide and saw 5% less fuel, 43.6% less CO₂, 76% less CO, and 53% less particulates.
Brazilian mines tested CAT D11T and 785C machines, achieving 3.9–4.2% fuel savings and <7-month payback.
A phosphate and potash miner operating in eight countries saw a 7.2% average fuel reduction across Scania, Mercedes, and CAT loaders.
A Turkish mine achieved 5.4% lower fuel use verified by long-term data logging.
Sierra Gorda Mine in Chile cut fuel use 5.3% and CO by 18%. ExxonMobil’s Monterey Mines recorded ~5% less fuel and visible smoke reduction.
A global top-5 miner saved $20K–$35K per machine annually with a 4-month ROI.
A Brazilian mine validated 4.53% fuel savings on Scania G440 trucks versus controls.
A national U.S. quarry company confirmed 7.8% average savings across seven test sites.
A Peruvian mine saw 4.7% less fuel and 363% ROI after one year.
Revathi Mining Drilling in India improved per-meter fuel by 8.5%.
Cemex Dominican Republic saved 11.5% fuel and $21,980 per truck annually — 3.8-month ROI.
Yamana Gold in Brazil reported <1-year payback and provided an endorsement letter.
Penske & Toyota Transport tested C-12 engines in EPA labs — 11.3% highway and 3.2% city savings.
Penske’s DHL test: 4.6% savings over 289K miles, <1-year ROI. Penske Lubbock TX test: 5.1% fuel reduction over 124K miles.
C.R. England’s 42-truck study over 12.7M miles showed 4.4% improvement.
A Cat C16 road train (Australia) and Peterbilt (USA) achieved 6.5–6.7% savings.
Rinehart Oil fleet improved MPG by 8.99%.
ITL Petroleum in Los Angeles achieved 6.96% fuel reduction fleetwide.
FedEx truck fleets averaged 3.3% savings over 1.5M miles.
An Iveco truck in Europe saved 9.4% over 9,000 km.
Millbrook (UK) Volvo FL10 test showed 7.38% fuel reduction.
CEMEX Haiti’s Cat 3406C generator improved 31.1% in kWh/gal efficiency.
ARAI India test: 3% fuel improvement and 58% particulate reduction.
Mahindra 15 kVA genset saved 13.2%; Volvo Penta 500 kVA saved 9%; payback in 22 days.
Hanson AZ quarry’s Cat 3406 genset cut fuel use 22.1%.
Kirloskar 125 kVA generator reduced fuel use 8%.
Largest global port operator installed 90 units and cut fuel costs 7.5%.
Del Monte’s freighters achieved 4.5% fuel reduction fleetwide.
Norbulk Shipping verified 3–5% fuel cuts on three ships and expanded fleetwide.
Adani tugboats saved 4.1% fuel (5-month ROI).
U.S. Navy USS Independence burned 151 fewer gallons — up to 40% savings in vehicle tests.
A major Turkish port cut fuel 5–19%, averaging 10.8% with 3–6 month payback.
Gulf Orient Seaways saved 10% and eliminated black smoke.
Standards Institution of Israel validated 7.4% fuel savings and major emission cuts.
SGS Dubai confirmed 17% fuel, 30% emission reductions on forklifts.
U.S. Army Aberdeen found 3.6% fuel and 10–17% emission reductions.
Italian Ministry of Defense confirmed 5.2% fuel and 10–18% emission cuts.
City of Jonesboro reduced fleet fuel 7%.
Missouri DOT achieved 3.8% fuel and 59% opacity reductions.
John Deere 8335R tractor in Brazil saved 7.1%, 9½-month payback.
NYC DEP cut CO 35%, CO₂ 50%, NOx 26%, soot 65%.
Venezuelan Ministry of Environment vehicles saw 20% better fuel economy.
Australian railroad (Cat 3512 engines) recorded 5.2–8% fuel savings, fleet rollout followed.
Adani Indian DLW ALCO WDG-3A loco achieved 6.6% savings (4.3-month ROI).
AAR-recognized lab test saw 7% idle fuel reduction and large VOC emission cuts.
Latin American bus fleet saved 4.8% fuel, 9-month payback.
TransMilenio (Bogota) reduced fuel 3.6%, 11-month payback.
Arriva Portugal cut fuel 4.4%, soot 50%, 15-month ROI.
Bucharest buses achieved 5% fuel savings fleetwide.
Delaware school boiler reduced fuel 7.6%, NOx 13%, CO 4%.
Ameet Industries (India) saw 9.5% fuel reduction on HFO furnaces.
Allied Nippon achieved 10% fuel savings on Thermax Thermopack system.
HBL Power Systems rotary furnace saved 22.9% fuel.
Nashoba High (MA) saved 26% fuel, $9,650 in 2 months.
Hetero Labs cut fuel 20% on 5-ton Thermax boiler.
Ranbaxy Laboratories achieved 4.5% reduction on 3-ton boiler.

Why Zelkam?

We have become a leader in applying this technology to the diesel equipment industry. Brian Livingston, our president, is a 40+ year Chemical Engineer that spent almost 20 years in Caterpillar's Diesel Engine Division. He has a wealth of experience to provide expert advice and guidance on this unique technology. We have saved customers millions of liters of diesel and many thousands of tons of CO2. Reach out and have an honest conversation with him about what it could mean for your operations.

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