2016 Toyota Highlander Fluid Specs & Capacities

Quick Reference: 2016 Toyota Highlander Fluid Specs

Fluid	Type/Specification	Capacity
Engine Oil	SAE 0W-20 (API SN / ILSAC GF-5)	6.4 quarts (3.5L V6) / 4.6 quarts (2.7L I4)
Engine Coolant	Toyota Super Long Life Coolant (SLLC)	9.0 - 9.4 quarts (V6) / 7.1 - 7.5 quarts (I4)
Transmission Fluid	Toyota Genuine ATF WS (World Standard)	6.9 quarts (service refill)
Transfer Case (AWD)	Toyota Genuine Differential Gear Oil LT 75W-85 GL-5	0.9 quarts
Rear Differential (AWD)	Toyota Genuine Differential Gear Oil LT 75W-85 GL-5	0.5 quarts
Brake Fluid	DOT 3	As required
Power Steering	Electric Power Steering (EPS) - No Fluid	N/A
Windshield Washer	Summer/Winter Washer Fluid	~4.7 quarts

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Maintaining your 2016 Toyota Highlander with the correct fluids is the single most important thing you can do to ensure its longevity and reliability. Using the wrong type of oil, coolant, or transmission fluid can lead to premature wear, poor performance, and costly repairs. This guide covers every essential fluid, its specific OEM specification, and the correct capacity to keep your Highlander running like new.

Engine Oil

The heart of your Highlander is its engine, and the correct engine oil is its lifeblood. For the 2016 model year, Toyota specifies a single grade for both the 3.5L V6 (2GR-FE) and 2.7L I4 (1AR-FE) engines to maximize fuel economy and ensure proper lubrication of tight internal tolerances.

• Specification: SAE 0W-20
• Certification: API Service SN or higher (e.g., SP) and ILSAC GF-5 or higher (e.g., GF-6A).
• Capacity (with filter change):
  • 3.5L V6: 6.4 quarts (6.1 liters)
  • 2.7L I4: 4.6 quarts (4.4 liters)

Notes: Always use a full synthetic 0W-20 oil that meets these specifications. Using a heavier grade, such as 5W-20 or 5W-30, can impede oil flow on startup and reduce fuel efficiency. The "SN" or "SP" rating ensures the oil has the correct additive package to protect against sludge and deposits. The standard oil change interval is 10,000 miles or 12 months, but this should be shortened if you frequently tow, drive in dusty conditions, or make many short trips.

Engine Coolant

Toyota uses a specific, long-life coolant chemistry that is not compatible with common "universal" green or orange coolants found at auto parts stores.

• Specification: Toyota Super Long Life Coolant (SLLC)
• Type: Phosphate-based Organic Acid Technology (P-OAT)
• Color: Pink/Red

Notes: This is often referred to as "Toyota Pink." It comes pre-diluted 50/50 with deionized water and should not be mixed with water or any other coolant type. Mixing coolants can cause them to gel, leading to clogged radiator passages and severe engine overheating. The factory fill is designed to last up to 100,000 miles for the first service, with subsequent changes recommended every 50,000 miles.

Transmission Fluid

Both the front-wheel drive (FWD) and all-wheel drive (AWD) versions of the 2016 Highlander use a 6-speed automatic transmission that requires a specific low-viscosity fluid.

• Specification: Toyota Genuine ATF WS (World Standard)
• Capacity: Approximately 6.9 quarts (6.5 liters) for a drain and fill. A full system flush is not specified by Toyota.

Notes: Crucial Pitfall: Do not use any other fluid, including multi-vehicle ATFs, Dexron, Mercon, or ATF+4. Using the incorrect fluid will cause irreversible damage to the transmission's clutch packs and valve body, leading to harsh shifting, slipping, and eventual failure. This transmission is considered "filled for life," but many technicians recommend a drain-and-fill service every 60,000 to 90,000 miles, especially for vehicles used for towing, to maintain optimal performance.

Transfer Case & Differential Fluid (AWD Models)

For AWD models, the transfer case and rear differential require a specific gear lubricant to protect the gears and bearings from extreme pressure.

• Specification: Toyota Genuine Differential Gear Oil LT 75W-85 GL-5
• Transfer Case Capacity: 0.9 quarts (0.85 liters)
• Rear Differential Capacity: 0.5 quarts (0.5 liters)

Notes: This is a high-performance, relatively low-viscosity gear oil. Do not substitute with a heavier 75W-90 or 75W-140 unless it is an emergency, and be sure to replace it with the correct fluid as soon as possible. These fluids are often neglected but are critical for the longevity of the AWD system. A change interval of 30,000 to 60,000 miles is wise preventative maintenance.

Brake Fluid

Brake fluid is hygroscopic, meaning it absorbs moisture from the air over time. This moisture lowers the boiling point of the fluid, which can lead to a soft or spongy pedal and reduced braking power in demanding situations.

• Specification: DOT 3

Notes: While DOT 4 fluid has a higher boiling point and is compatible, it is also more hygroscopic and will need to be changed more frequently. For nearly all drivers, sticking with a quality DOT 3 fluid is the best choice. The system should be bled and the fluid replaced every 2-3 years, regardless of mileage, to ensure safety and prevent corrosion in the brake lines and ABS module.

Power Steering Fluid

The 2016 Toyota Highlander is equipped with Electric Power Steering (EPS). This system uses an electric motor to provide steering assistance instead of a traditional hydraulic pump and fluid. Therefore, there is no power steering fluid to check or change.

Windshield Washer Fluid

This is the most straightforward fluid on the vehicle. Use a quality, commercial windshield washer solvent. In colder climates, use a fluid with a low freezing point (e.g., rated to -20°F) to prevent the reservoir and lines from freezing and cracking.

• Capacity: Approximately 4.7 quarts (4.5 liters)

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By following these factory specifications, you can ensure your 2016 Highlander delivers the safety, comfort, and reliability you expect for years to come.

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