2024+ Tacoma - Differential Gear Oil Specifications

[4gtacoadmin]

This thread expands on page 619 of your 2024+ Toyota Tacoma (4th Gen) Owner's Manual, providing complete differential gear oil specification reference data.

Tacoma Differential Oil: 75W-85 GL-5 Specs & Capacity​

Oil Type and Viscosity​

Specification: Toyota Genuine Differential Gear Oil LT 75W-85 GL-5 or equivalent

OEM Guidance:

Your Toyota vehicle is filled with "Toyota Genuine Differential Gear Oil" at the factory. Use Toyota approved "Toyota Genuine Differential Gear Oil" or an equivalent oil of matching quality to satisfy the above specification. Please contact your Toyota dealer for further details.

- Source: Owner's Manual page 619

Differential Capacity Specifications​

Differential Location	Application	Capacity (US)	Capacity (Metric)	Capacity (Imperial)
Front Differential	4WD Models Only	1.4 qt.	1.3 L	1.1 Imp.qt.
Rear Differential	Standard (2WD/4WD without TRD Package)	4.8 qt.	4.5 L	4.0 Imp.qt.
Rear Differential	Manual Transmission + TRD SPORT or TRD OFFROAD	5.0 qt.	4.8 L	4.2 Imp.qt.

- Source: Owner's Manual page 619

Technical Notes (Domain Expert Context)​

Why These Specifications Matter​

Oil Grade Breakdown:

• LT Designation: Toyota Genuine Differential Gear Oil with Long-Term performance characteristics
• 75W-85 Viscosity: Grade 75W for cold winter conditions, Grade 85 for high-temperature operation (optimized for truck differential load and temperature profiles)
• GL-5 Performance Level: API Gear Lubrication category GL-5 provides extreme pressure anti-wear protection required for hypoid gears found in truck differentials

Substitution Caution:

While generic 75W-85 GL-5 fluids exist, Toyota's proprietary formulation includes specific additives engineered for their differential designs. Using non-Toyota-approved equivalents may affect differential noise characteristics, wear rate, and warranty coverage. For maximum reliability and warranty protection, Toyota Genuine is recommended.

Capacity Variants Explained​

Front vs. Rear Differentials:

The 4th Gen Tacoma front differential (4WD models) holds significantly less fluid (1.4 qt) compared to the rear differential (4.8-5.0 qt) due to different design and lubrication requirements. Both are critical for proper operation.

TRD Package Difference:

The TRD SPORT and TRD OFFROAD packages include equipment (such as electronic locking differential or specialized gear ratios) that requires an additional 0.2 quarts of fluid compared to standard configurations. Plan accordingly when servicing.

Service Considerations​

• Differential Service Interval: Refer to your Maintenance Schedule. Off-road use may require more frequent service.
• Fluid Contamination: Differential fluid collects metal particles from gear wear over time. Regular service intervals help maintain gear health.
• Overfilling Risk: Overfilled differentials can cause seal failure and fluid leakage. Always follow capacity specifications exactly.
• Temperature Considerations: 75W-85 viscosity is optimized for typical truck operating temperatures. Extreme climates may benefit from alternatives (consult dealer).

Source Attribution​

Owner's Manual:

• 2024+ Toyota Tacoma (4th Gen) Owner's Manual - Page 619 (Vehicle Specifications)

Disclaimer:

This guide is derived from the official 2024+ Toyota Tacoma Owner's Manual (Document OM04041U) with supplementary technical context. Always follow your official owner's manual for warranty compliance and recommended service intervals. This is a reference guide only. For fluid recommendations in extreme climates or special circumstances, consult your Toyota dealership.