Buick Enclave 2018-present 3.6L Engine Specifications

The 3.6L engine in the 2018-Present Buick Enclave is a naturally aspirated V6 engine producing 310 horsepower at 6,700 rpm and 266 lb-ft of torque at 5,200 rpm. It features direct fuel injection, dual overhead cams, and variable valve timing. The engine is paired with a 6-speed automatic transmission and is available in both front-wheel drive and all-wheel drive configurations. It is compatible with regular unleaded gasoline and has an estimated EPA rating of 21 mpg combined.

Regular maintenance for the 3.6L engine includes oil changes every 5,000 to 7,500 miles using 0W-20 synthetic oil, tire rotations every 7,500 miles, and spark plug replacement every 100,000 miles. The engine air filter should be replaced every 15,000 to 30,000 miles, and the cabin air filter every 15,000 to 30,000 miles. It is also recommended to inspect belts and hoses at 50,000 miles and replace them as needed. Adhere to the maintenance schedule outlined in the owner's manual for optimal performance and longevity.

To replace the air filter on the 3.6L engine, open the hood and locate the air filter housing on the driver's side. Release the clips or screws holding the housing in place. Remove the housing and pull out the old air filter. Inspect the housing for debris and clean if necessary. Insert the new air filter, ensuring it is properly seated and the gasket is in place. Replace the housing and secure it with the clips or screws. Start the engine and check for any leaks or unusual noises.

Common issues with the 3.6L engine include rough idling, decreased performance, or illuminated check engine lights. Start by using an OBD-II scanner to retrieve any fault codes. Codes related to the mass airflow sensor or oxygen sensors may indicate a problem with the air filter or sensor performance. Check the air filter for cleanliness and replace if necessary. Inspect the spark plug wires and boots for wear or cracks. If issues persist, consult a certified mechanic or refer to the service manual for further diagnostic steps.

To optimize the performance of the 3.6L engine, ensure regular maintenance is performed, including oil changes, filter replacements, and spark plug maintenance. Use high-quality gasoline with the recommended octane rating. Avoid aggressive driving and maintain consistent driving habits to improve fuel efficiency. Consider upgrading to a high-performance air filter or exhaust system for increased airflow and power output. Additionally, regular tune-ups and inspections can help maintain peak performance and address any potential issues before they escalate.