The 2018 Chevrolet Cruze 1.4L turbocharged engine delivers a balance of fuel efficiency and performance, but keeping it running at its peak requires the right lubrication. Regular maintenance is critical for turbocharged engines, which operate under higher temperatures and pressures than naturally aspirated units. Using the correct viscosity and fluid specifications ensures that components like the turbocharger, piston rings, and valve train remain protected from wear, sludge buildup, and thermal breakdown. Proper lubrication not only extends the life of the powertrain but also helps maintain the fuel economy that made the Cruze a popular choice for daily drivers and commuters.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The ultimate protection for your 1.4L turbo engine, offering up to 25,000 miles of wear resistance and superior horsepower retention.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – An excellent choice for up to 20,000 miles of service intervals, featuring enhanced cleaning power to keep the engine running smoothly.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – Designed to outperform conventional oils while meeting OEM mileage standards, providing trusted protection with 100% synthetic technology.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles over 75,000 miles to boost detergent power, reduce sludge, and protect aging engine seals.
- AMSOIL Oil Filter – Engineered with premium media to filter 99% of contaminants at 20 microns, ensuring maximum oil flow and reduced engine wear.
- WIX Oil Filter – A premium aftermarket filter option that offers superior media improvements over standard OEM-branded filters for reliable protection.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides maximum fluidity in extreme temperatures and protects against wear during heavy towing or challenging terrain.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Offers exceptional wear protection and meets OE requirements for the 6-speed automatic transmission.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A long-life, pre-mixed formula that protects all cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, non-toxic alternative that requires mixing, offering up to 5 years or 150,000 miles of corrosion protection.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS responsiveness and stable viscosity across a wide temperature range for safer stopping power.
Engine Oil and Filtration Requirements
The 1.4L LE2 M Turbo engine in the 2018 Cruze is a sophisticated powerplant that relies on precise lubrication. The manufacturer specifies a 0W-20 viscosity grade, and the oil capacity, including the filter change, is 4.2 quarts. It is vital to check the oil level after refilling and to torque the oil drain plug to 18 ft/lbs. The engine operates under GM Dexos 1 Gen 3 specifications, a standard that requires advanced additives to prevent low-speed pre-ignition (LSPI) and protect the turbocharger from coking and sludge.
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil exceeds these requirements, providing 75% more engine protection against horsepower loss and wear compared to conventional oils. It is proven to protect turbochargers 72% better than the GM Dexos 1 Gen 2 specification, ensuring the turbo bearings remain free of deposits even during stop-and-go driving. For owners seeking extended service intervals, the AMSOIL Extended-Life 0W-20 offers 37% more cleaning power to keep the engine internals free of deposits, allowing for up to 20,000 miles of operation between changes.
For vehicles with over 75,000 miles, the AMSOIL 0W-20 High-Mileage Motor Oil is an ideal choice. It features a unique chemistry that includes boosted detergents and dispersants to reduce sludge by 67% compared to standard oils. This formulation also contains enhanced anti-wear additives and seal conditioners to reduce oil consumption and protect aging engine components. The AMSOIL OE 0W-20 provides a cost-effective alternative that still delivers 100% synthetic protection, fighting sludge and deposits to maintain engine cleanliness.
Complementing the oil is the AMSOIL Oil Filter (EA15K50-EA), which provides a filtering efficiency of 99% at 20 microns. This high-efficiency filter allows for lower oil restriction, keeping critical engine parts lubricated and reducing wear. For those who prefer a WIX Oil Filter (WL10290-EA), it is also compatible and offers premium media that outperforms many original equipment manufacturer filters in terms of dirt-holding capacity and filtration efficiency.
Transmission Fluid and Cooling Systems
The automatic transmission in the 2018 Chevrolet Cruze 1.4L (6-speed 6T35) is a complex component that benefits significantly from synthetic fluid. The total fill capacity is 9 quarts, while the initial fill is approximately 4.2 quarts. The actual capacity can range between 4.0 and 6.0 liters depending on the specific service procedure. Using a high-quality synthetic transmission fluid is essential to withstand the rigors of heavy towing, elevated temperatures, and challenging terrain.
AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is engineered to remain fluid in sub-zero temperatures while providing reserve protection during heavy use. It helps maintain shifting precision and protects against the wear and temperature-related problems that can lead to costly repairs. For a more budget-friendly option that still delivers OE-level protection, the AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to protect against wear and meets the fluid requirements for the 6T35 transmission.
The cooling system in the Cruze is equally critical, as the turbocharged engine generates significant heat. The coolant capacity is 6.2 quarts. The AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a unique poly-organic acid (OAT) formulation that is phosphate-, nitrate-, nitrite-, silicate-, borate-, and amine-free, ensuring compatibility with all cooling system metals. It provides protection for up to 150,000 miles or 5 years. Alternatively, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers a concentrated, non-toxic option that greatly surpasses standards for metallic corrosion and erosion, allowing for flexible mixing with distilled water.
Brake Fluid and Additional Protection
Safety is paramount, and the braking system of the 2018 Cruze relies on DOT 3 and DOT 4 specifications. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is designed to provide excellent ABS and traction-control responsiveness. It maintains a stable viscosity over a wide temperature range, preventing brake fade and ensuring consistent pedal feel even in extreme weather conditions.
Beyond the essential fluids, the fuel system of a modern turbocharged engine benefits from regular maintenance. The AMSOIL P.i. Performance Improver Gasoline Additive is a powerful treatment that restores fuel injectors to 100% flow rate, restores up to 14% horsepower, and improves fuel economy. It is particularly effective in GDI engines where carbon buildup is common. For seasonal storage or long periods of inactivity, AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, while the AMSOIL Engine Fogging Oil protects internal components from rust.
For general vehicle care, AMSOIL Synthetic Multi-Purpose Grease resists thermal degradation and offers outstanding low-temperature pumpability, making it ideal for chassis lubrication. The AMSOIL Heavy-Duty Metal Protector provides a long-lasting barrier against salt, moisture, and corrosion, perfect for undercoating. For cleaning, the AMSOIL Heavy-Duty Degreaser quickly dissolves oil and grime, while the AMSOIL Miracle Wash Waterless Wash and Wax Spray leaves a protective finish without the need for water.
About the Vehicle
The 2018 Chevrolet Cruze represents the second generation of this compact sedan, which debuted in the mid-2010s as a successor to the compact Cobalt and Aveo. Designed specifically for the North American and European markets, the Cruze was positioned by General Motors as a reliable, fuel-efficient alternative to competitors like the Honda Civic and Toyota Corolla. The 2018 model year features a refreshed exterior with a bolder front fascia and updated interior technology, maintaining the vehicle’s reputation for practicality and value.
Under the hood, the 1.4L Turbocharged engine is the heart of the Cruze’s performance character. This high-efficiency inline-four delivers a respectable power output, typically ranging around 150 horsepower and 177 lb-ft of torque, providing adequate acceleration for city commuting and highway merging. The turbocharging technology allows the small-displacement engine to offer a drive that feels more robust than the raw displacement would suggest, while still delivering excellent fuel economy ratings that appeal to cost-conscious buyers. The vehicle was primarily offered with a 6-speed automatic transmission, which became the standard configuration for 2018, offering smooth shifts and a good balance between performance and efficiency. The manual transmission option was largely phased out for the 1.4L engine in the final years of this generation, but the vehicle remained a favorite for those seeking a well-balanced compact car.
Despite its reputation for reliability, the 2018 Chevrolet Cruze with the 1.4L turbo engine does have specific issues that owners should be aware of. One common problem is the potential for coolant leaks, particularly from the water pump or thermostat housing, which can lead to overheating if not addressed promptly. This is a critical point where the quality of the coolant and the integrity of the cooling system play a major role in preventing engine damage. Another known issue involves the turbocharger system, where sludge buildup from degraded oil or carbon deposits can affect the turbo’s operation, leading to reduced performance or failure of the variable vane mechanism. Using a high-quality synthetic motor oil like AMSOIL Signature Series can significantly mitigate this risk by resisting coking and keeping the turbo bearings clean.
A third common concern is related to the cooling fan assembly, which can fail and cause the engine to overheat, especially in stop-and-go traffic. Ensuring the cooling system is flushed with a high-performance antifreeze like AMSOIL Passenger Car Antifreeze can help prevent the corrosion and deposit buildup that often contributes to these failures. Finally, the 1.4L turbo engine has been known to experience oil consumption issues in higher mileage units, often due to piston ring sticking or valve stem seal wear. The AMSOIL 0W-20 High-Mileage Motor Oil is specifically designed to address this with enhanced seal conditioners and anti-wear additives that help restore compression and reduce oil consumption, extending the life of the engine.
Owners of the 2018 Chevrolet Cruze often appreciate its comfortable ride quality and spacious interior for its class. The vehicle offers a quiet cabin, which is a distinct advantage for a compact sedan. However, as the vehicle ages, the importance of using premium lubricants becomes even more pronounced. By addressing the specific vulnerabilities of the turbocharged powertrain and cooling system with high-performance synthetic fluids, owners can ensure their Cruze continues to provide reliable, efficient service for many miles to come. Regular maintenance with the correct fluids not only prevents costly repairs but also preserves the vehicle’s resale value and driving dynamics.