This contribution describes the possibilities of using the ecological oils Mogul HEES 46, Hydros 46, Fuchs Plantohyd 46S and Shell Naturelle 46HF-E in a slide assembly. It compares their chosen properties reciprocally. A sliding pair was made up of a shaft from steel 14 220 and of a bearing shell. The bearing shell was fully of bronze, centrifugally moulded, with the trade mark B60 M4. The sliding pair worked during the whole experiment in combined friction conditions.
