The 2016 Kia SOUL equipped with the 2.0-liter 4-cylinder engine (Engine Code [5] B) requires specific fluid selections to ensure peak performance and longevity. This compact crossover utility vehicle, known for its boxy design and versatile interior, relies on precise lubrication to handle the stresses of daily driving, from stop-and-go city commutes to longer highway jaunts. Selecting the correct viscosity and fluid type is critical, as the manufacturer recommends SAE 5W-20 as the preferred grade for all temperature conditions, though 5W-30 is also acceptable. The engine oil capacity, including the filter, is 4.2 quarts. Proper maintenance intervals and fluid quality are essential to maintaining the vehicle’s reliability and fuel efficiency.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil – Offers unsurpassed engine protection, extending service intervals up to 25,000 miles for drivers who demand the absolute best in wear reduction and horsepower retention.
- AMSOIL Extended-Life 5W-20 100% Synthetic Motor Oil – Provides a balance of performance and value, delivering 37% more cleaning power than OE oils and ensuring reliable protection for up to 20,000 miles.
- AMSOIL OE 5W-20 100% Synthetic Motor Oil – A cost-effective option that matches the performance of conventional oils while offering the superior benefits of 100% synthetic technology, including improved resistance to LSPI events.
- AMSOIL 5W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles with over 75,000 miles to reduce oil consumption and sludge while restoring seal flexibility.
- AMSOIL Oil Filter – Engineered to provide 99% filtration efficiency at 20 microns, reducing engine wear by capturing more wear-causing contaminants than competing filters.
- WIX Oil Filter – A premium aftermarket filter option featuring superior media that improves upon OEM-branded filters for effective protection.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-OAT formulation that provides corrosion protection for up to 150,000 miles, safe for all cooling system metals and seals.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that requires mixing with distilled water, offering extended service intervals and protection against metallic corrosion.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand heavy towing, elevated temperatures, and challenging terrain while maintaining fluidity in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A cost-effective solution that protects against transmission wear while supporting fuel efficiency.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with a stable viscosity across a wide temperature range.
Proper lubrication begins with the engine oil, which serves as the lifeblood of the 2.0-liter powerplant found in the SOUL. The engine requires a specific volume to operate correctly, and the total capacity, including the filter change, is 4.2 quarts. Overfilling or underfilling the crankcase can lead to significant mechanical issues, ranging from foaming and aeration to insufficient lubrication of critical components. The 2016 SOUL benefits significantly from AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil, which remains fluid in extreme cold and resists breakdown in high heat. Unlike conventional oils that degrade faster, synthetic options maintain their viscosity and protective properties for longer periods, allowing for extended drain intervals when used with the corresponding AMSOIL Oil Filter.
The oil filter is an equally critical component of the engine’s protection strategy. A clogged or inefficient filter can restrict oil flow, causing the oil bypass valve to open and allowing unfiltered oil to circulate through the engine. This accelerates wear on bearings, camshafts, and other moving parts. The AMSOIL Oil Filter, identified by product code EA15K20, is rated at 99 percent efficiency at 20 microns. This high level of filtration ensures that small, wear-causing particles are removed from the oil stream before they can cause damage. For drivers seeking a high-quality alternative, the WIX Oil Filter (51334) also offers premium media that outperforms many original equipment manufacturer options.
Transmission and Fluid Maintenance
While engine oil often gets the most attention, the transmission fluid plays a vital role in the longevity of the 2016 Kia SOUL’s drivetrain. The 6-speed automatic transmission (A6MF1) requires a specific total fill capacity of 7.7 quarts. Regular fluid changes are essential to prevent sludge buildup and maintain the fluid’s hydraulic properties. The SOUL’s transmission fluid must withstand the rigors of everyday driving, including the stop-and-go traffic common in urban environments. AMSOIL offers two primary options for this application. The Signature Series Fuel-Efficient fluid is designed for those who push their vehicles, offering protection against heavy towing and elevated temperatures. Alternatively, the OE Fuel-Efficient synthetic fluid provides robust protection at a more accessible price point, ensuring smooth shifting and reduced wear.
Cooling system health is another pillar of maintenance for this vehicle. The cooling system capacities vary slightly depending on the transmission type, with 5.3 quarts required for automatic transmissions and 5.4 quarts for manual transmissions. AMSOIL Antifreeze & Coolant products are engineered to exceed original equipment manufacturer requirements. The Passenger Car & Light Truck Antifreeze is a pre-mixed, ethylene glycol formulation that offers protection for up to 150,000 miles or five years. For those who prefer a concentrated solution, the Propylene Glycol Antifreeze provides superior cooling efficiency and extended service life, capable of lasting up to 150,000 miles in passenger cars or significantly longer in heavy-duty applications. Both formulations are free from phosphates, nitrates, and other additives that can degrade seals and gaskets over time.
Brake fluid is another area where synthetic performance shines. The SOUL’s braking system, which includes ABS and traction control, benefits from AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid. This fluid offers a stable viscosity over a wide temperature range, ensuring consistent pedal feel and optimal responsiveness in emergency situations. The high boiling point of synthetic brake fluid prevents vapor lock, a condition that can cause brake failure under heavy use. By maintaining the hydraulic integrity of the braking system, drivers can enjoy safer stopping power and extended service intervals.
Vehicle Background and Ownership Experience
The 2016 Kia SOUL represents a unique segment in the automotive market, blending the practicality of a subcompact car with the utility of a small SUV. Launched by Kia as a design-focused crossover, the second-generation model, which includes the 2016 year, is immediately recognizable by its distinctive boxy shape. This design is not merely aesthetic; it serves a functional purpose by maximizing interior cargo space and headroom, making it a favorite among drivers who need versatility in a compact footprint. The vehicle features a front-engine, front-wheel-drive layout, which provides predictable handling characteristics suitable for various weather conditions.
Under the hood of the 2016 SOUL, owners have the choice of a 1.6-liter or a 2.0-liter four-cylinder engine. The 2.0-liter engine delivers a robust balance of power and efficiency, generating approximately 164 horsepower. This powertrain is paired with a 6-speed automatic transmission that is generally praised for its smooth shifting and responsiveness. The combination allows the SOUL to perform adequately in city traffic while providing sufficient acceleration for highway merging and passing. The vehicle’s chassis is tuned for comfort, absorbing road imperfections well without sacrificing the stability needed for cornering. This makes the 2016 SOUL an excellent choice for urban commuters who also enjoy weekend road trips.
Market positioning for the SOUL has always been strong within the compact crossover category. It appeals to a broad demographic, from young professionals seeking an affordable and stylish vehicle to families needing a practical hauler without the bulk of a full-size SUV. The rear seats fold flat to create a large cargo area, accommodating everything from furniture to sports equipment. Over the years, the SOUL has built a reputation for reliability and value retention. Owners often cite the ease of maintenance and the availability of parts as key reasons for sticking with the brand. The platform, built on Kia’s global architecture, is known for its durability, and with proper lubrication, the 2.0-liter engine can provide years of trouble-free service. The vehicle’s design has remained consistent, with minor updates over the years to enhance safety and technology, but the core identity of the boxy, versatile crossover remains unchanged. This longevity and consistent design language contribute to the model’s enduring popularity among used car buyers and current owners alike.