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What is the recommended oil specification for Kia K3?

2 Answers

HavenAnn

07/24/25 8:14am

The Kia K3 engine can use both 5W20 and 5W30 oil specifications. For vehicles under 100,000 kilometers, it is recommended to use 5W20 oil viscosity as it has lower viscosity and less resistance. However, after exceeding 100,000 kilometers, 5W30 must be used as its higher viscosity helps form a better protective oil film on engine components. The Kia K3 requires engine oil with an API rating of SM grade or higher. Engine oil quality is typically indicated by API classifications. The "S" series represents gasoline engine oils, with specifications ranging from SA to SN. Each successive letter indicates improved performance and more protective additives for the engine. Methods for selecting engine oil: Choose oils from major brands or manufacturers: Examples include Shell, Mobil, Castrol, Caltex, Total, BP, Valvoline, Fuchs, GS, as well as domestic brands like Kunlun, Great Wall, and Longpan. Select by category: Engine oils are divided into gasoline (marked with "S" in API rating on packaging) and diesel (marked with "C") types. Regular passenger cars should use gasoline engine oil. API grade selection: For gasoline engines, lower-grade oils (mineral-based) suit commercial vehicles or older cars. SL grade oils are mostly mineral-based (some brands offer semi-synthetic), recommended for passenger cars over 5 years old. Seasonal selection: Common specifications include 5W-30, 5W-40, and 10W-40. Use 5W-30 in winter (0W in northern regions), 5W-40 for all-season use in most areas, and 10W-40 in summer.

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TuckerDella

08/11/25 3:52am

As an owner of the older K3 model, I've practically worn out the maintenance manual. For this car's oil requirements, it depends on the engine type: the 1.6L Gamma engine should use 5W-30 or 5W-20 full synthetic oil, ensuring it meets API SN or higher certification or ILSAC GF-5 standards. The original Dongfeng Yueda Kia yellow 5W-20 oil is a perfect fit. For the 1.4T model, you'll need ACEA C2/C3 standard 0W-30 low-ash oil to protect the turbo. Don't exceed an oil change interval of 8,000 km. In the severe cold of Northeast China, it's advisable to switch to 0W-grade oil for winter. Always check the certification marks printed on the oil container to avoid being misled by repair shops into using the wrong viscosity.

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