Idemitsu 30305024-75000C020 Gear Oil - Front Differential or Rear Differential

Idemitsu 75W90 Racing Gear Oil

Idemitsu 75W90 Racing Gear Oil is a 1 qt gear lubricant for front differential, rear differential, and N/A applications listed in the fitment data. It is a direct-use fluid choice for many OE manufacturer applications across Subaru, Jeep, Ram, Toyota, Nissan, Hyundai, Kia, Lexus, and more.

• 75W-90 gear oil viscosity for differential and transfer case service where specified
• 1 quart container for service fills and top-offs
• Fits front differential, rear differential, and select N/A applications per vehicle listing
• OE manufacturer application coverage across a wide range of makes and models
• Part number 30305024-75000C020 for ordering and catalog lookup

Product details

Idemitsu 75W90 Racing Gear Oil, part number 30305024-75000C020, is listed for a broad range of vehicles that call for 75W-90 gear oil in differential service. Fitment includes applications such as Fits 2021-2026 Subaru Crosstrek, rear differential; Fits 2024-2026 Toyota Land Cruiser, front differential; and Fits 2020-2026 Cadillac CT5, rear differential for electronic limited-slip differential. It is also listed for many front differential and rear differential service points on vehicles like Jeep Grand Cherokee, Ram 1500, Nissan Frontier, and Subaru WRX.

This product line is positioned as a racing gear oil within Idemitsu’s lubricant lineup, making it a fit for owners and technicians who need the specified viscosity grade for driveline service. The part number 30305024-75000C020 appears throughout the catalog for OE manufacturer applications, including many AWD and 4WD platforms that rely on correct gear oil selection for differential operation.

Common service issues

• Low or degraded differential fluid during scheduled maintenance
• Noise from a front or rear differential after fluid service is overdue
• Incorrect viscosity selection for 75W-90 gear oil applications
• Service needs on AWD and 4WD driveline components
• Fluid replacement for vehicles listed with electronic or limited-slip differential notes

Installation notes and tips

Verify the exact axle, differential, or transfer box requirement before filling. Use the vehicle-specific notes in the fitment list, especially where component codes, limited-slip notes, or transfer box references are shown. Confirm the fill specification in the service manual, drain the old fluid fully, and refill to the manufacturer’s stated level.

Quality assurance

Idemitsu is an OE manufacturer for many of the listed applications, and this gear oil is cataloged for direct service use in those vehicles. Part number 30305024-75000C020 is referenced for fitment across a large OE-style application range.