Engine oil Suzuki Swift IV K12B (1.2) — viscosity and approvals

Which engine oil for Suzuki Swift IV K12B (1.2, 2010–2017) — viscosity, specifications, capacity and change interval.

Engine Specifications

Recommended Oil

Change oil when either condition is reached — mileage OR time. Never exceed both limits simultaneously.

Approved Oil Brands

Suzuki Motor Oil 5W-30 / Castrol Magnatec 5W-30 / Shell Helix HX7

How to Choose Oil for K12B

1. Viscosity must match specification — using the wrong viscosity grade is not acceptable. Only 5W-30 is approved for K12B.
2. Check the approval code on the label — the can must show ILSAC GF-4 / API SN compliance. Regular oil with an incorrect approval may damage the engine.
3. Volume — when changing with a new filter, you need 3.7 L. Check the oil level with the dipstick 5 minutes after filling.
4. Do not mix grades — if topping up, use the same viscosity and specification.

Consequences of Using the Wrong Oil

• Oil with a wrong approval for a petrol engine can clog the DPF filter (diesel) or cause excessive oil consumption.
• Too thin oil (e.g. 10W-40 instead of 5W-30) accelerates timing chain/belt and crankshaft bearing wear.
• Too thick oil makes cold starting difficult and increases fuel consumption.

Domande frequenti

What oil goes in a Suzuki Swift IV K12B?

Viscosity 5W-30, approval ILSAC GF-4 / API SN, volume 3.7 L. Recommended brands: Suzuki Motor Oil 5W-30 / Castrol Magnatec 5W-30 / Shell Helix HX7.

How often to change the oil in Suzuki Swift IV?

Every 15 000 km or 12 months — whichever comes first. With heavy city driving or short trips, every 7,500–10,000 km.

How much oil does the K12B take?

3.7 litres with a new filter. Before ordering, double-check — some Swift IV variants with the same engine code may differ by 0.2–0.5 L.