Selecting the correct lubricant for your 2017 GMC Terrain is a critical aspect of ownership that directly impacts engine longevity, fuel efficiency, and overall performance. This specific model year, part of the second generation of the Terrain, requires careful attention to the specifications outlined in the owner’s manual. Using the proper oil viscosity and meeting the required standards ensures the turbocharged engine operates smoothly under various conditions, from daily commutes to weekend adventures.
2017 GMC Terrain Factory Specifications
The engineering team at General Motors designed the 2017 Terrain to balance power and efficiency, which is why adhering to the factory oil specifications is non-negotiable. The recommended oil type is specifically formulated to meet the demands of the 1.5L turbocharged engine or the available 2.0L turbocharged unit. The correct formulation provides the necessary protection against heat, sludge, and wear that older formulations could not handle effectively.
Recommended Viscosity and Standards
For the majority of climate conditions encountered by the 2017 Terrain, the manufacturer recommends an SAE 5W-20 viscosity. This multi-grade oil is thin enough to circulate quickly during cold starts, reducing engine wear, while maintaining adequate thickness at high operating temperatures to protect the turbocharger. Furthermore, the oil must meet the GM dexos1® Gen 2 specification, which confirms it has passed rigorous detergent and performance tests designed for modern engines.
Benefits of Using OEM-Compliant Oil
Utilizing oil that matches the GMC specifications offers benefits that extend far beyond basic lubrication. High-quality dexos1® certified oils are engineered to keep the variable valve timing (VVT) system clean and responsive. This is vital for the Terrain’s performance, as the VVT system optimizes valve lift and timing for better fuel economy and smoother power delivery throughout the rev range. Performance in Extreme Conditions Drivers need to understand how temperature fluctuations affect their 2017 Terrain. In freezing climates, the 5W-20 viscosity prevents the oil from thickening into a gel, ensuring the engine turns over easily even on the coldest mornings. Conversely, in hot summer weather or during spirited driving, the oil maintains its film strength, preventing metal-to-metal contact and premature degradation of engine components.
Performance in Extreme Conditions
Maintenance and Change Intervals
Staying on top of oil changes is the single most effective way to extend the life of the Terrain. While the traditional recommendation was a 3,000-mile change interval, advancements in oil chemistry have extended this for the 2017 model. GMC typically suggests an oil change every 7,500 to 10,000 miles, or once a year, whichever comes first. However, drivers who frequently operate in severe conditions—such as constant short trips, towing, or driving in dusty environments—should adhere to the more conservative end of that spectrum.
Consequences of Incorrect Oil
Using the wrong type of oil, such as a 10W-30 or an oil that does not meet the dexos1® standard, can lead to several negative outcomes. The engine may experience increased friction, leading to reduced fuel economy and potential long-term damage to the turbocharger bearings. Additionally, incorrect oil can cause the variable valve timing system to foul, resulting in a illuminated check engine light and costly repairs that could have been easily avoided.
Summary for the 2017 Model Year
Owning a 2017 GMC Terrain means relying on a sophisticated piece of machinery that requires specific care to perform optimally. By sticking with an SAE 5W-20 viscosity oil that carries the GM dexos1® Gen 2 certification, owners ensure their vehicle remains reliable, efficient, and powerful. This simple maintenance choice protects the investment and allows the Terrain’s engineering to shine through for years to come.
