Engine

Cylinder oil feed rate

Turn the cylinder oil feed rate set on the lubricator (g/kWh) into kilograms and litres a day, or work out the real feed rate from the daily consumption.

Find
g/kWh
kW
kg/l

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How it works

kg a day = feed rate (g/kWh) × power (kW) × 24 / 1,000, and litres = kg / density (about 0.93 kg/l for cylinder oils). 0.8 g/kWh at 10,000 kW is 192 kg, about 206 litres, a day.

The right feed rate depends on the engine maker's guidance, the fuel's sulphur content and the oil's BN, and on scrape-down analysis. Too little wears liners and rings; too much wastes oil and builds deposits.

For training and cross-checking. Not a substitute for approved navigation equipment, nautical publications and the ship’s own procedures. Calculations run in your browser and nothing you type is stored; a PDF you download is made on our server and not kept.

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