How do I choose and use bar and chain oil for my chainsaw?

By the Atkinson Oil Co. product team (IGNIS Overseas Ltd, Isleworth, UK). Claims reviewed by IGNIS Product & Compliance on 14 Nov 2026. Last updated: 14 November 2026.

Short answer. Use a dedicated bar and chain oil in the saw's chain-oil tank, not engine oil, and check the oiler is working before each cut. Atkinson Chainsaw Oil is our bar and chain oil; it is inherently biodegradable. Your saw maker's manual decides the oil type and refill routine.

Key facts

What to look for in a bar and chain oil

• Made for the job. Bar and chain oil is made to cling to a fast-moving chain. Do not use used engine oil or general-purpose oils in its place.
• What your manual asks for. Some makers name a grade or type. Follow it.
• Base type. Ours is inherently biodegradable.

How to use it

1. Stop the saw and let it cool before opening the chain-oil cap.
2. Clean round the cap so sawdust doesn't fall into the tank.
3. Fill the chain-oil tank — the cap usually shows an oil-drop symbol; the fuel tank is separate.
4. Refill at the same time as you refuel, unless the manual says otherwise.
5. Check the oiler. With the saw running and the bar tip pointing at a light-coloured surface, a fine line of oil should appear. No line: stop and check the oiler and bar oil holes.
6. Keep the bar groove and oil holes clean at each chain change.

Signs the chain isn't getting enough oil. Smoke from the bar, a blued or discoloured bar rail, or a chain that tightens quickly as it warms. Stop and check the oiler.

Storing the saw. Follow the maker's storage instructions for the chain-oil tank.

Safety and handling. A safety data sheet is available on request. Wear the protective kit the saw maker specifies.

Product link: Chainsaw Oil · Also see: 2-Stroke Engine Oil.

Sources

Printed product label; Safety data sheet (available on request); Your equipment maker's manual