2025 Tesla Model X Fluid Type Specs

Quick reference

Fluid	Type/Spec	Capacity
Engine Oil	N/A (Electric Vehicle)	N/A
Engine Coolant	Tesla Raven's Blue (G48 Equivalent)	~15-18 Liters (estimation, verify in owner's manual)
Transmission Fluid	N/A (Electric Vehicle)	N/A
Transfer Case Fluid	N/A (Electric Vehicle)	N/A
Front Differential Fluid	Refer to Owner's Manual	Refer to Owner's Manual
Rear Differential Fluid	Refer to Owner's Manual	Refer to Owner's Manual
Brake Fluid	DOT 4 LV	~1 Liter (estimation, verify in owner's manual)
Power Steering Fluid	N/A (Electric Vehicle with Electric Power Steering)	N/A
Windshield Washer Fluid	Off-the-shelf washer fluid	~4.5 Liters (estimation, verify in owner's manual)
DEF	N/A (Electric Vehicle)	N/A

Engine Oil

The 2025 Tesla Model X is an all-electric vehicle and does not use traditional engine oil. Its electric motors are sealed units and typically do not require lubrication changes in the same way internal combustion engines do. Owners should refer to their owner's manual for any specific maintenance requirements related to the electric drivetrain.

Engine Coolant

The Tesla Model X utilizes a sophisticated thermal management system that requires a specific coolant. Tesla vehicles generally use a factory-fill coolant that is often referred to as "Tesla Raven's Blue." This is a long-life hybrid organic acid technology (HOAT) or silicated HOAT (Si-HOAT) coolant, similar to a G48 specification. It is crucial to use only the specified Tesla coolant or an approved equivalent to maintain the integrity of the cooling system components, including the battery, motors, and power electronics. Mixing different types of coolants can lead to chemical reactions that cause sludge formation, corrosion, and damage to the cooling system, potentially voiding your warranty. The capacity can vary slightly depending on the specific model and battery configuration; always verify the exact capacity in your owner's manual or OEM service information. Coolant flushes are typically recommended at longer intervals (e.g., every 4 years or 50,000 miles), but always consult your maintenance schedule.

Transmission Fluid

As an all-electric vehicle, the 2025 Tesla Model X does not have a conventional transmission that requires transmission fluid changes. The single-speed reduction gearboxes on the front and rear axles are sealed units and are typically designed for the life of the vehicle, though some units may have a fluid for lubrication which may or may not be serviceable. Refer to the owner's manual or an authorized Tesla service center for any specific lubrication needs for these components.

Transfer Case Fluid

Being an all-electric, all-wheel-drive vehicle, the Tesla Model X does not feature a traditional transfer case that requires fluid maintenance. Power delivery to the front and rear axles is handled independently by separate electric motors.

Front Differential Fluid

While the Tesla Model X doesn't have a traditional differential in the internal combustion engine sense, the front electric motor assembly often incorporates a reduction gearbox that contains lubricating fluid. The specific type and maintenance schedule for this fluid are not publicly disclosed by Tesla in a manner akin to traditional ICE vehicles. It is imperative to consult your owner's manual or an authorized Tesla service center for accurate information regarding the front drive unit fluid type, capacity, and service intervals. Improper fluid can lead to premature wear and failure of the drive unit.

Rear Differential Fluid

Similar to the front, the rear electric motor assembly of the 2025 Tesla Model X includes a reduction gearbox that uses lubricating fluid. As with the front drive unit, Tesla does not broadly publish these specifications for DIYers. For the correct fluid type, capacity, and maintenance intervals for the rear drive unit, always refer to your owner's manual or contact an authorized Tesla service center directly. Using an unapproved fluid could result in damage to the drive unit and potentially void your vehicle's warranty.

Brake Fluid

The 2025 Tesla Model X uses a hydraulic braking system that requires high-quality brake fluid. Tesla typically specifies DOT 4 LV (Low Viscosity) brake fluid. This type of fluid is formulated to maintain its performance characteristics at both high and low temperatures and has a lower viscosity for optimal operation with modern ABS and stability control systems. It is crucial to use DOT 4 LV fluid from a reputable manufacturer. Never use DOT 3 or DOT 5 (silicone-based) fluid, as DOT 3 has a lower boiling point and DOT 5 is incompatible with DOT 4 systems and can cause seal damage. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to corrosion in the braking system. It should be flushed and replaced according to Tesla's recommended schedule, usually every two years, regardless of mileage. Always verify the exact capacity and interval in your owner's manual.

Power Steering Fluid

The 2025 Tesla Model X is equipped with an electric power steering system, which does not utilize traditional hydraulic power steering fluid. This system is self-contained and does not require any fluid maintenance.

Windshield Washer Fluid

The Tesla Model X uses standard, off-the-shelf windshield washer fluid. It is recommended to use a high-quality washer fluid, especially one that offers freeze protection in colder climates to prevent the reservoir and lines from freezing and cracking. Many washer fluids also contain detergents to help clean bug splatter and road grime effectively. Avoid using plain water, as it offers no freeze protection and can leave mineral deposits. The washer fluid reservoir capacity is generally generous to reduce refill frequency; however, check your owner's manual for the precise capacity.

DEF (Diesel Exhaust Fluid)

The 2025 Tesla Model X is an all-electric vehicle and does not have an internal combustion engine that produces exhaust emissions requiring Diesel Exhaust Fluid (DEF). Therefore, DEF is not applicable to this vehicle.

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