What oil for a Hyundai and Kia (petrol)?

Oil for a petrol Hyundai or Kia is chosen a little differently from German cars. The Korean makers rarely use their own formal approvals — instead they specify an API or ILSAC quality class and a particular viscosity in the manual. Those two things are the starting point.

Quality class and viscosity — the basis of the choice

In most Hyundai/Kia petrol engines an oil meeting the current API class (e.g. SN, SP) or ILSAC is required, in a viscosity most often of 5W30, and in newer, economical units 5W20. Always confirm the exact value in the manual or by VIN.

• API SN or SP class (or ILSAC GF-5/GF-6) — confirm in the manual
• Viscosity usually 5W30, in some new cars 5W20
• A high-quality synthetic oil
• The exact variant is best selected by VIN

GDI and T-GDI engines — what to watch for

Modern units with direct injection (GDI) and turbocharging (T-GDI) are more demanding. They work at higher temperatures and are sensitive to deposits and to LSPI (low-speed pre-ignition). That’s why an oil of a recent API class with the right additive package matters — an older “any 5W30” oil may not be enough.

With a Hyundai and Kia it’s not the oil brand but the current API class and the right viscosity that determine the correct choice.

Interval and level checks

A sensible interval is 10,000–15,000 km, and with city driving and in T-GDI engines closer to the lower limit. Some GDI units can consume oil, so it’s worth checking the level regularly.

A documented change with the right oil is also important for keeping the warranty on Korean cars, known for their long warranty periods.

We’ll select an oil with the right class and viscosity for your Hyundai or Kia and change it with call-out to the address you give.