Methodology for PCF Calculations of Lubricants, Greases and other Specialties
Total and Biogenic Carbon Content
Additionally, to enable the calculation of biogenic greenhouse gas emissions in the subsequent downstream value chain, the biogenic carbon content (in kg CBio / kg product) and the total carbon content (TCC) (in kg Ctotal /kg product), are tracked throughout the product's value chain. The lubricant manufacturer shall report separately the biogenic carbon content and the TCC of the lubricant or other speciality.
The total carbon content (TCC) of a lubricant or other speciality is the amount of carbon embedded in the product per kilogram, after accounting for carbon inputs and outputs. Biogenic carbon content (BCC) refers to the portion of that carbon which originates from biological (recent-atmospheric) carbon stocks. Carbon lost during manufacturing (for example as waste or off-spec material) is not assumed to be biased toward biogenic or fossil carbon unless there is evidence to the contrary. As such, losses are treated as containing the same share of biogenic vs fossil carbon as the inputs. In practice, the BCC of the product is calculated by applying the biogenic share of input carbon to the TCC of the product:
BCCpo t=T po t×(bog rdu c CCrduc i enic ca o rbn shre of i puts a n ).
For example, if a lubricant is produced using one fossil‐derived input (0 % biogenic, 0.86 kg C/kg) at 70 % mass and one bio‐derived input (100 % biogenic, 0.65 kg C/kg) at 30 % mass, the TCC entering is:
0.70× 0.86+0.30× 0.65 = 0.797/. The biogenic carbon share of inputs is thus
0.30 × 0.65 0.797 = 24.5%
If no selective carbon loss occurs, BCC of the product refers to = 0.797 × 0.245 = 0.195 /
Where a process yields more than one product, the total carbon content is allocated to the products according to the mass of each output, as mass reflects the physical relationship between inputs and outputs. The biogenic carbon share of the inputs is then applied equally to the allocated total carbon content of each product.
Furthermore, the recycled content may be stated as the mass percentage of recycled content per kg product.
Additional Reporting
In addition to the mandatory reporting requirements, companies may also choose to disclose a partial PCF excluding biogenic removals (PCFpartial,excl,biogenic,removal). This optional indicator is intended to support harmonization with other reporting frameworks (e.g., Catena-X) and can provide additional transparency for stakeholders. Where used, it shall be reported separately and clearly distinguished from the total PCF including biogenic removals.
Version 1.2, 15.10.2025 © ATIEL and UEIL Page 29 of 40 This document is a controlled document only in electronic form. Printed versions or copies are not subject to change service
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