Short answer: Most 2016 Optima models use synthetic 5W-20 engine oil, with 5W-30 acceptable in hotter climates or under heavy loads. Turbo models commonly follow 5W-30 as well. Always verify the exact specification for your engine code and region in the owner’s manual.
Oil type and viscosity by engine
The 2016 Optima was offered with two engines: a 2.4-liter GDI and a 2.0-liter turbo. Both require synthetic oil that meets ILSAC GF-5/API SN standards. The exact viscosity guidance can vary by engine and climate, so the manual should be your final reference.
Before listing the typical recommendations, note that your vehicle may have a different spec based on market or production batch.
- 2.4L GDI engine (non-turbo): Use synthetic 5W-20 as the default grade. 5W-30 is acceptable in hot climates or under heavy driving if specified in the owner's manual.
- 2.0L Turbo engine: Use synthetic 5W-30 as the standard grade. In some markets, 5W-20 may be listed for certain conditions, but 5W-30 is the common choice for turbo models.
In short, use a synthetic oil that meets API SN/ILSAC GF-5 with viscosity in the 5W-20 to 5W-30 range, depending on your engine and climate. Always confirm in your manual or with a dealer.
How to confirm the exact oil spec for your car
To ensure you select the precise oil grade and specification for your Optima, follow these steps:
- Check the owner's manual maintenance section for the recommended oil viscosity and specification.
- Look for the oil grade sticker under the hood or on the engine bay label; it often lists the required viscosity.
- Identify your engine code (2.4L or 2.0L turbo) and cross-check it with Kia's official documentation for your market.
- If in doubt, consult a Kia dealer or a qualified mechanic, providing your VIN for exact specification.
These steps help ensure you use the correct oil grade and specification for your 2016 Optima, protecting the engine and maintaining warranty coverage.
Summary
The 2016 Kia Optima generally uses synthetic oil meeting ILSAC GF-5/API SN. The default viscosity is 5W-20, with 5W-30 recommended in hotter climates or under heavier driving, especially for the turbo model. Always verify the exact specification for your engine and region in the owner's manual or with a Kia dealer to ensure optimal performance and longevity.
What does the W in 0W-20 and 5W-30 mean?
Winter
The first number ends with the letter 'W', which stands for Winter. This measurement is related to how an oil flows when it is cold, such as at engine start-up. The second number is defined by how an oil flows when at higher temperatures normal engine operating temperatures.
What oil is used for a 2016 Kia Optima?
Understanding Your Kia Optima's Oil Requirements
Most Optimas use either 5W-20 or 5W-30 oil.
Can a Kia Optima drive in snow?
The core of Kia's winter readiness lies in its sophisticated Dynamax™ All-Wheel Drive (AWD) system, available on many models. This system continuously monitors road traction and proactively redistributes power to the wheels with the most grip, reducing the risk of slipping on slick surfaces.
What type of oil for a Kia Optima?
Valvoline – High Mileage 5W-30 Full Synthetic Engine Oil, Prevents Leaks (Part No. 881169)