Cusco 010 001 R01 Super 140 LSD Gear Oil 80W-140 API GL-5 Partial Synthetic 1L

Vehicle Fitment

• Universal Fitment - For use in Rear RWD and 4WD/AWD Limited Slip Differentials

Fitment Notes

• Designed for rear LSD applications only - not intended for front differential use
• Recommended for use with Cusco LSD units; always verify OEM differential fluid specification before use in non-Cusco LSDs
• Not for use in standard open differentials

Features

• Formulated specifically for limited slip differentials, with friction modifiers that support smooth LSD engagement without chatter
• Partial synthetic base oil provides improved thermal stability and viscosity retention compared to conventional mineral gear oils
• Minimal viscosity change at high operating temperatures, maintaining consistent LSD performance under track and spirited driving conditions
• AP1 / API GL-5 rated - meets the friction and extreme-pressure requirements of high-performance limited slip differentials
• SAE 80W-140 viscosity grade is optimized for RWD and 4WD rear differentials running Cusco LSD internals
• Developed and tested by Cusco using real-world motorsport data from rally, circuit, and gymkhana applications

Specifications

• Part Number: 010 001 R01
• Oil Type: LSD Gear Oil (Partial Synthetic)
• Viscosity: SAE 80W-140
• API Rating: GL-5 / AP1
• Application: Rear LSD - RWD & 4WD/AWD
• Volume: 1 Liter
• UPC: 4996338001665

Included Components

• 1x Cusco Super 140 LSD Gear Oil 80W-140 (1 Liter bottle)

Product Description

The Cusco 010 001 R01 Super 140 is a partial synthetic LSD gear oil formulated at an SAE 80W-140 viscosity grade and rated to API GL-5 / AP1 standards. It is designed specifically for rear limited slip differentials in RWD and 4WD/AWD vehicles, providing the correct friction characteristics needed to support smooth, consistent LSD engagement without clutch chatter. The partial synthetic formulation offers improved thermal stability over mineral-based alternatives, making it well-suited for both street driving and track use where differential temperatures can spike under load.

This oil is the recommended fluid for Cusco LSD units and is developed using knowledge gained through Cusco's active involvement in rally, circuit racing, and gymkhana competition. It is sold in a convenient 1-liter bottle and is a universal product compatible with any rear LSD meeting the GL-5 / AP1 specification.