The 2018 Hyundai Kona is a compact crossover that introduced a unique blend of utility and style to the subcompact market. Under the hood, the 1.6L 4-cylinder turbocharged engine (Engine Code [5] G) delivers spirited performance, but that turbocharging creates higher operating temperatures and more stress on lubricants than a naturally aspirated engine. This specific powertrain requires a motor oil that not only maintains viscosity under heat but also actively protects the turbocharger bearings from premature wear. Using the correct lubricants ensures that this modern engine runs smoothly, retains its power output, and maintains peak fuel economy over the life of the vehicle.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – The premier choice for maximum protection, offering up to 25,000 miles of service intervals and superior defense against turbocharger coking and wear. This oil provides 75% more engine protection against horsepower loss compared to conventional standards.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – An excellent balance of protection and value, delivering up to 20,000 miles of guaranteed protection with 37% more cleaning power to keep the engine running smoothly for a longer duration.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – Designed to outperform conventional oils while meeting OEM requirements, this oil fights sludge and deposits effectively. It is specifically engineered to protect turbochargers 72% better than required by the GM dexos1 Gen 2 specification.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – The ideal solution for Kona engines that have surpassed 75,000 miles, featuring a unique chemistry with enhanced detergents and anti-wear additives to reduce sludge and protect against oil consumption.
- AMSOIL Oil Filter – Paired perfectly with AMSOIL Signature Series or Extended-Life oil, this filter offers 99% filtration efficiency at 20 microns and allows lower restriction to keep critical engine parts lubricated, reducing wear and extending service life.
- WIX Oil Filter – A premium aftermarket option recommended for use with AMSOIL OE or High-Mileage motor oils, featuring media that offers improvements over original equipment manufacturer branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A ready-to-use 50/50 pre-mix formulation designed to last up to 150,000 miles or 5 years, providing corrosion protection for all cooling system metals and hoses while being phosphate-free.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option requiring mixing, this coolant offers protection for 150,000 miles in passenger cars and greatly surpasses standards for metallic corrosion and erosion resistance.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Recommended for the differential and transfer case, this lube controls thermal runaway, protects against rust and corrosion, and helps reduce operating temperatures in the Kona’s drivetrain components.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – A thicker alternative gear lube that provides advanced protection against wear and contains friction modifiers suitable for limited-slip applications found in some differential setups.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Another excellent option for gear protection, offering long oil and seal life while maintaining performance in varying temperatures.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – An excellent upgrade for the 2018 Kona’s braking system, providing stable viscosity over a wide temperature range and ensuring excellent ABS and traction-control responsiveness.
- AMSOIL P.i.® Performance Improver Gasoline Additive – Helps maintain peak performance by restoring GDI fuel injectors to 100% flow rate, reducing pre-ignition knock, and cleaning carbon buildup from the combustion chamber and valves.
The heart of your 2018 Kona’s performance lies in the 1.6-liter turbocharged engine. Unlike standard atmospheric engines, turbochargers spin at incredibly high speeds and generate significant heat. The oil in this system must resist breaking down under thermal stress and must provide a protective film that doesn’t leave deposits that could clog the tiny oil passages feeding the turbo. AMSOIL Signature Series 5W-30 is formulated specifically to handle these demands, offering protection against horsepower loss and wear even in severe service conditions. The recommended oil capacity for the 1.6L engine is 4.8 quarts when including a filter change. After refill, it is crucial to check the oil level to ensure accuracy, as overfilling or underfilling can lead to performance issues.
Maintenance intervals for the Kona can be extended significantly by switching to these synthetic lubricants. While standard maintenance schedules often suggest changes every 7,500 or 10,000 miles, AMSOIL motor oils are guaranteed for up to 25,000 miles or one year under normal driving conditions. For those seeking a balance between cost and performance, the Extended-Life or OE motor oil options provide up to 20,000 miles of protection. If your vehicle has high mileage, the High-Mileage formulation becomes essential to seal conditioning and reduce oil consumption. Complementing the oil change with the correct filter is just as critical. The AMSOIL Oil Filter is designed to capture contaminants more efficiently than standard filters, ensuring that the clean oil circulating through your engine does its job without being compromised by debris.
Cooling and Drivetrain Lubrication
The cooling system in the Kona plays a vital role in managing the heat generated by the turbocharger and the engine block. Over time, conventional coolants can break down, leading to corrosion or overheating issues. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant uses a unique organic acid technology (OAT) that protects all cooling system metals, gaskets, and hoses for up to 150,000 miles. The capacity for the coolant system is approximately 7.5 quarts. Alternatively, for those who prefer to mix their own, AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers a concentrated solution that delivers superior protection against metallic corrosion and erosion, ensuring the cooling system remains effective year-round.
Beyond the engine and cooling system, the drivetrain components also require high-quality lubrication to ensure longevity. The Kona’s differential and transfer case (if equipped) benefit from the advanced protection provided by AMSOIL SEVERE GEAR® synthetic gear lubes. These lubricants are designed to control thermal runaway, a common issue in gear sets under heavy load, and they protect against rust and corrosion. Whether you require the 75W-90, 75W-110, or 80W-90 viscosity, these oils provide long oil and seal life and contain friction modifiers for limited-slip applications. The differential capacity is listed as 1.1 pints for the rear axle, while the transfer case requires a similar small volume, making the quart packaging of these gear lubes highly practical for maintenance. Using a synthetic gear lube helps reduce operating temperatures and extends the life of the gears and bearings.
Braking and Fuel System Care
Safety and efficiency are paramount for any driver, and the 2018 Kona’s braking and fuel systems are critical areas for synthetic upgrades. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid is an excellent choice for maintaining optimal brake performance. It provides a stable viscosity over a wide temperature range, which is crucial for consistent pedal feel and ABS responsiveness. It also helps prevent moisture absorption that can lower the boiling point of standard brake fluids, ensuring the braking system remains reliable in all conditions.
For the fuel system, the 1.6L turbo engine is a Gasoline Direct Injection (GDI) design. GDI engines are prone to carbon buildup on intake valves and injectors, which can affect performance and fuel economy. AMSOIL P.i. Performance Improver is a specialized additive designed to restore GDI fuel injectors to 100% flow rate after a single tank of fuel. It helps prevent pre-ignition knock, restores up to 14% horsepower, and improves fuel economy. Regular use of this additive keeps the fuel system clean and ensures the turbocharger receives the precise amount of fuel it needs for optimal operation.
Vehicle Background and Performance Profile
The 2018 Hyundai Kona marked Hyundai’s significant expansion into the subcompact SUV segment, a category that was experiencing rapid growth at the time. Designed with a distinctive, futuristic aesthetic often described as “alien-like” by observers, the Kona stood out on the road with its split headlight design and sharp angles. It was built on Hyundai’s global compact architecture, which provided a solid foundation for a vehicle that felt substantial despite its small footprint. The Kona was available with two primary engine options, but the 1.6-liter turbocharged 4-cylinder was a standout choice for those seeking more dynamic performance, offering a blend of acceleration and efficiency that appealed to younger buyers and urban drivers alike.
The 1.6L Turbo engine, designated as the G4LC, is a high-output unit that delivers substantial power for its displacement. This turbocharged setup, paired with a 7-speed dual-clutch transmission (in many markets) or a CVT, allows the Kona to offer a spirited driving experience. The engine’s ability to pull strongly in lower RPMs makes it well-suited for city driving and highway merging, where quick bursts of power are often required. However, the high stress placed on the turbocharger and the engine block necessitates a lubrication strategy that prioritizes thermal stability and deposit control. Owners of this vehicle often praise its responsive handling and comfortable ride quality, noting that it strikes a good balance between the practicality of a crossover and the agility of a hatchback.
Despite its reliability, the 2018 Kona with the 1.6L Turbo engine does have specific areas where owners might encounter common problems. One frequent issue observed in turbocharged GDI engines is the formation of carbon deposits on the intake valves. This buildup can restrict airflow and lead to rough idling or reduced power. Using AMSOIL P.i. Performance Improver regularly helps mitigate this issue by cleaning the injectors and combustion chambers, maintaining the engine’s efficiency over time. Another common concern is turbocharger health; excessive heat can cause oil to carbonize and clog the oil feed passages to the turbo. High-quality synthetic oil like Signature Series prevents this coking, ensuring the turbo spins freely and coasts down properly after driving.
Oil consumption can also be a point of concern for some owners, particularly as the vehicle accumulates higher mileage. The high-mileage formulation of AMSOIL motor oil includes enhanced seal conditioners and anti-wear additives that can help reduce oil consumption and extend the life of the engine’s internal components. Additionally, the Kona’s turbo system can be susceptible to issues if the oil degrades under heat stress, leading to premature wear on the turbo bearings. AMSOIL’s superior oxidation resistance ensures the oil maintains its protective properties even during aggressive driving or towing. Finally, some owners have reported issues with the cooling system, such as coolant degradation or corrosion. Regularly flushing the system with a high-performance antifreeze like AMSOIL Passenger Car & Light Truck Antifreeze & Coolant helps prevent these issues, ensuring the engine stays at the optimal temperature for maximum efficiency and longevity.
By selecting the appropriate lubricants and fluids, owners can address these potential issues proactively. The combination of synthetic motor oil, high-efficiency filters, and specialized additives creates a comprehensive maintenance strategy that not only protects the 2018 Kona’s engine but also enhances its overall performance. Whether you are navigating city streets or taking the Kona on longer road trips, the correct fluids ensure that the vehicle operates as intended, delivering the reliability and performance that Hyundai engineers designed it to have.
Ultimately, the 2018 Hyundai Kona is a vehicle that rewards attentive maintenance. Its unique design and capable performance make it a standout in the subcompact SUV class, but its longevity depends on the quality of the fluids running through it. By adhering to a regimen that includes AMSOIL’s full line of automotive lubricants, owners can enjoy the spirited driving dynamics of the 1.6L Turbo engine while minimizing the risks associated with high-performance operation. From the precision of the fuel system to the robustness of the drivetrain, every component of the Kona benefits from the advanced protection offered by synthetic lubricants.