The 2013 GMC Terrain uses Dexos1 Gen 2-certified motor oil, typically in a viscosity of 5W-30, and can be synthetic or synthetic-blend. Always confirm the exact specification for your engine and climate by consulting the owner's manual or a GMC dealer.
Oil type and grade
GM specifies Dexos1 Gen 2-certified engine oil for the Terrain’s gasoline engines in 2013. The usual grade recommended for most driving is 5W-30. Oils meeting the Dexos1 Gen 2 specification, whether synthetic or synthetic-blend, are appropriate; conventional oil is generally not recommended for this model year.
Engine options and note
In 2013, the Terrain was offered with gasoline engines that typically use Dexos1 Gen 2 5W-30. Always confirm the exact grade for your specific engine and climate by consulting the owner’s manual or your GM dealer if you are unsure.
Maintenance guidance
Use a quality oil filter and ensure the oil is topped up to the proper level. The vehicle’s oil life monitor will indicate when a change is due, with a typical interval influenced by driving conditions and the Dexos1 Gen 2 oil you select. Regularly checking the oil level is advised, especially before long trips or in extreme weather.
How to verify the specification for your vehicle
Check the under-hood oil specification sticker, consult the owner’s manual, or contact a GMC dealer with your VIN to confirm the exact viscosity and Dexos standard required for your specific configuration.
Summary
For the 2013 GMC Terrain, the recommended oil is Dexos1 Gen 2 certified motor oil with a typical viscosity of 5W-30, usable in synthetic or synthetic-blend forms. Always verify the exact spec for your engine and climate in the owner’s manual or with a dealer, and follow the vehicle’s oil-life monitor for maintenance intervals.