Keeping your 2018 Mazda CX-3 running smoothly requires attention to detail, especially when it comes to the fluids that keep its components operating in harmony. The vehicle’s 2.0-liter inline-four engine is designed for efficiency and reliability, but it performs best when equipped with the highest quality synthetic lubricants. Choosing the right oil and maintaining proper fluid levels can extend the life of your engine and transmission while ensuring optimal fuel economy and performance in all weather conditions.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – Offers the highest level of protection with a service interval of up to 25,000 miles or one year, providing superior resistance to heat and wear.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Designed for extended drain intervals up to 20,000 miles, featuring enhanced cleaning power to keep the engine free of deposits.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – A cost-effective synthetic option that outperforms conventional oils and meets original equipment manufacturer standards.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Formulated specifically for vehicles with over 75,000 miles to reduce sludge and oil consumption while extending engine life.
- AMSOIL Oil Filter – Delivers 99% filtration efficiency at 20 microns, protecting the engine from harmful contaminants and ensuring proper oil flow.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A 50/50 pre-mix ready-to-use formula that protects against corrosion and freezing down to -34°F.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, non-toxic formula that provides extended protection up to 150,000 miles or 5 years.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Engineered to improve fuel economy while protecting against the rigors of heavy towing and high temperatures.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides essential protection against wear for automatic transmissions with a service life up to 100,000 miles.
- AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube – Offers advanced protection for manual transmissions and differentials, controlling thermal runaway and extending component life.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Features a high boiling point and stable viscosity to ensure responsive braking in extreme temperatures.
When selecting the correct viscosity for your Mazda CX-3, the factory specification calls for a 0W-20 synthetic motor oil. This low-viscosity fluid is crucial for the vehicle’s engine efficiency, ensuring quick circulation during cold starts and reducing friction at operating temperatures. The engine oil capacity for a 2018 Mazda CX-3 with a filter replacement is 4.4 quarts. After refilling, it is important to check the oil level to ensure proper lubrication. The drain plug torque specification is between 23 and 30 ft/lbs, and using a new washer on the drain bolt is recommended to prevent leaks.
While the engine receives the most attention, the transmission system also relies heavily on high-quality fluid. The 2018 CX-3 features a 6-speed automatic transmission. For the EW6AX-EL model, the initial fill capacity is 3.5 quarts, while a total fill requires 8.2 quarts. Using a synthetic transmission fluid can significantly reduce heat and wear, especially in stop-and-go traffic or when driving on hilly terrain. The fluid remains fluid even in sub-zero temperatures, ensuring smooth shifting regardless of the season. For those who drive their CX-3 for long distances or carry heavy loads, the fuel-efficient synthetic formulas can help maintain peak transmission performance and fuel economy.
Beyond the engine and transmission, other vital fluids contribute to the longevity of your vehicle. The cooling system of the CX-3 requires a coolant capable of withstanding extreme temperatures. For vehicles equipped with the MTXL5 radiator, the capacity is 5.9 quarts, while the ATXL6 radiator holds 6.1 quarts. AMSOIL antifreeze solutions provide long-lasting protection against freezing and boiling, as well as preventing internal corrosion of metal components, gaskets, and hoses. Additionally, the differential and transfer case require specific gear lubes. For the transfer case, the capacity is approximately 0.8 pints, and the rear differential holds about 0.7 pints. The torque specifications for these fill plugs range from 30 to 42 ft/lbs, and a new washer should always be installed.
Brake fluid is another critical component often overlooked until problems arise. AMSOIL’s DOT 3 and DOT 4 synthetic brake fluid offers excellent responsiveness for ABS and traction control systems. It maintains a stable viscosity across a wide temperature range, preventing boiling during hard braking and ensuring consistent pedal feel. Regular replacement of brake fluid prevents moisture absorption, which can lower the boiling point and lead to brake fade.
About the Vehicle
The 2018 Mazda CX-3 is a subcompact crossover SUV that blends the practicality of a utility vehicle with the agile handling of a sport compact. Built on the Mazda2 platform, the CX-3 is known for its upscale interior and engaging driving dynamics, which set it apart from competitors in the subcompact segment. The vehicle is powered by a 2.0-liter DOHC 16-valve inline-four engine, part of Mazda’s SkyActiv-G series. This engine is designed to deliver a balance of power and fuel efficiency, producing 148 horsepower and 146 lb-ft of torque. It achieves a compression ratio of 13:1, which is among the highest for mass-produced gasoline engines, contributing to its impressive fuel economy ratings.
Mazda’s “Zoom-Zoom” philosophy is evident in the CX-3, which prioritizes driver involvement. The vehicle comes standard with a 6-speed automatic transmission with intelligent Drive Selector, or an optional manual transmission in certain markets, allowing drivers to feel more connected to the road. The exterior design features a bold grille and sleek lines, giving it a distinctive look that appeals to urban drivers and outdoor enthusiasts alike. The CX-3 is equipped with Mazda Connect infotainment and a range of safety features, including Advanced City Collision Mitigation, making it a safe choice for daily commuting.
Owners of the 2018 CX-3 appreciate its versatility and style. It serves as an excellent second vehicle for city driving, offering easy parking and a comfortable ride, yet it has enough capability for light off-road adventures thanks to the available i-ACTIV AWD system. The interior is compact but well-appointed, with high-quality materials and a driver-centric cockpit. However, like any vehicle, it benefits from the maintenance of premium lubricants to address common issues associated with its engine design.
One of the notable aspects of SkyActiv-G engines is their sensitivity to fuel quality and engine cleanliness. Carbon buildup on fuel injectors and intake valves can occur over time, particularly with direct injection engines. AMSOIL P.i.® Performance Improver can help restore up to 14% of horsepower by cleaning these critical components. Additionally, the engine’s high compression ratio requires oil that can withstand extreme thermal stress. Using a high-quality synthetic motor oil helps prevent pre-ignition knock and ensures that the engine runs smoothly under load.
Another common area of concern for CX-3 owners is the cooling system. While the engine is efficient, maintaining optimal cooling is essential to prevent overheating, especially in stop-and-go traffic or during summer driving. A superior antifreeze mixture ensures that the cooling system operates at peak efficiency, protecting the radiator and engine block from corrosion and thermal expansion issues. Furthermore, the CVTs and automatic transmissions in some models can benefit from the added protection of synthetic fluids that resist breakdown under high heat, extending the life of the transmission and reducing the likelihood of expensive repairs.
Finally, owners who utilize their CX-3 for hauling cargo or driving in snowy conditions will find that maintaining the integrity of the gear lubricants is vital. The AWD system relies on the transfer case and differentials to distribute power effectively. Using a synthetic gear lube that resists thermal breakdown and oxidation ensures that the AWD system operates smoothly and reliably, providing traction and stability in various road conditions. By addressing these specific needs, the 2018 Mazda CX-3 can continue to provide a reliable and enjoyable driving experience for years to come.