GMC Terrain: Fuel / Fuel Additives

Fuels in Foreign Countries

The U.S., Canada, and Mexico post fuel octane ratings in anti-knock index (AKI). For fuel not to use in a foreign country, see Prohibited Fuels (Gasoline)...

Gasoline

TOP TIER Detergent Gasoline is highly recommended for use with your vehicle. If your country does not have TOP TIER Detergent Gasoline, add ACDelco Fuel System Treatment Plus−Gasoline to the vehicle’s gasoline fuel tank at every oil change or 15,000 km (9,000 mi), whichever occurs first...

Other information:

GMC Terrain 2018-2025 Owners Manual: Seat Belts

This section describes how to use seat belts properly, and some things not to do. Warning Do not let anyone ride where a seat belt cannot be worn properly. In a crash, if you or your passenger(s) are not wearing seat belts, injuries can be much worse than if you are wearing seat belts...

GMC Terrain 2018-2025 Owners Manual: Engine Oil Life System

When to Change Engine Oil This vehicle has a computer system that indicates when to change the engine oil and filter. This is based on a combination of factors which include engine revolutions, engine temperature, and miles driven. Based on driving conditions, the mileage at which an oil change is indicated can vary considerably...