Estimated results
Over 5 years:
- Net savings before investment: USD 11,670
- Less installed cost: USD 9,000
- Net savings after investment: USD 2,670 (ROI 30%)
- Oil not purchased: 3,850 L
- CO2 avoided: 13.6 t (about 0.6 passenger cars driven for a year, each year)
Changing only the number of units moves payback and ROI % only when a site setup cost or volume discount is entered, because every other cost and saving is per unit.
Oil purchased per year
Oil changes avoided per year: 20.0 · Oil use reduced by 48%
Annual breakdown (all units)
| New oil not purchased | USD 3,080 |
|---|---|
| Waste oil disposal avoided | USD 154 |
| Primary filters not replaced | USD 800 |
| Oil-change labor avoided | USD 1,050 |
| Downtime avoided | USD 0 |
| Gross savings | USD 5,084 |
| Bypass elements + labor | -USD 1,550 |
| Oil analysis | -USD 1,200 |
| Net savings per year | USD 2,334 |
CO2 factor used: 3.53 kg CO2e per liter of oil not consumed.
With these inputs the running costs exceed the savings. Check the reduction percentage and element costs.
How the estimate is calculated
- Oil changes with bypass = changes today × (1 − reduction %).
- Oil saved = oil per change × changes avoided − element top-up oil × element changes. Multiplied by the number of units.
- Gross savings = oil saved × (oil price + disposal cost) + changes avoided × (filter parts + labor hours × rate + downtime).
- Running costs = element changes × (element price + element labor) + oil-analysis samples × sample cost.
- Installed cost = system price per unit (less any volume discount) × units + one-time site setup cost.
- Payback = installed cost ÷ net annual savings. ROI = (net savings × years − installed cost) ÷ installed cost.
- CO2 avoided = oil saved (L) × density × (production footprint + combustion factor × share burned).
Sources for defaults
- CO2 if used oil is burned (2.95 kg CO2/kg): IPCC, 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Vol. 2, Ch. 1, Tables 1.2 and 1.4 (lubricants: net calorific value 40.2 TJ/Gg; default CO2 emission factor 73,300 kg/TJ). ipcc-nggip.iges.or.jp
- Oil production footprint (1.06 kg CO2e/kg): Raimondi et al. (2012), Group II hydraulic oil, cradle-to-gate, as cited in Precision Lubrication / Fluitec, “Measuring and Attaining Sustainable Lubrication.” precisionlubrication.com
- Field evidence for extended drains: U.S. DOE / Idaho National Laboratory, Oil Bypass Filter Technology Evaluation quarterly reports (2003–2004). Eight buses and six Chevrolet Tahoes fitted with sub-micron bypass filters avoided 65 oil changes in the reporting period; fleet projections used an 80% reduction basis. inldigitallibrary.inl.gov
- Passenger-car equivalent (4.6 t CO2 per car per year): U.S. EPA, “Greenhouse Gas Emissions from a Typical Passenger Vehicle.” epa.gov
- All prices, labor, capacity, element and density defaults are NuTek Filteration Inc. assumptions for illustration only. Open “Source / note” under any input for details.
Limits of this estimate
This is a planning estimate, not a guarantee. Drain intervals should only be extended when oil analysis and the equipment manufacturer's requirements support it. The CO2 figure counts only oil that is not produced and not burned; it does not include spent filter elements, transport, sampling, or any change in fuel use.
Step 2
Get your ROI report (PDF)
Check the calculator above, add the company details, and we will e-mail you a branded PDF report with these numbers. A copy also goes to info@nutekfil.com so our team can follow up.