Dataset for: Comparative assessment of metallic residues in marine lubricating oils from ships using HFO and LSFO fuels

Dataset for: Comparative assessment of metallic residues in marine lubricating oils from ships using HFO and LSFO fuels: Operational implications for maintenance and MARPOL compliance This repository contains the dataset supporting the research article authored byPi‑Yen Lin and Wen‑Hsi Cheng. The dataset includes elemental concentrations measured in lubricating oil samplescollected from auxiliary diesel generators of two Cape-size bulk carriers operatingwith high-sulfur fuel oil (HFO) and low-sulfur fuel oil (LSFO). The samples werecollected during multiple transcontinental voyages between 2021 and 2023. Metal concentrations were determined using inductively coupled plasma atomicemission spectrometry (ICP-AES) following ASTM D5185-18. The analyzed elementsinclude Al, Cu, Fe, Ni, Na, Si, and V. The dataset provides the measurements used for statistical analyses and regressionmodeling presented in the associated manuscript. The data were used to investigatethe accumulation behavior of heavy metals in marine lubricating oil under differentfuel regimes and operating durations. Ship identifiers have been anonymized to protect operational confidentiality.