OS Giken OS011-KA1 OS-250R V2 LSD Differential Gear Oil 80W-250 1 Liter Can

Vehicle Fitment

• Universal - Compatible with all OS Giken Super Lock LSD units across all supported vehicle platforms
• Suitable for any rear differential application requiring a high-viscosity clutch-type LSD gear oil rated 80W-250

Fitment Notes

• This is the official factory-recommended gear oil for all OS Giken mechanical LSD units - OS-250R V2 is now the global standard, superseding the original OS-250R (gold) formula
• OS-250R V2 is fully compatible with any remaining original OS-250R stock and can be mixed without issue during the transition period
• Not recommended for transaxle (FWD) applications
• Refer to your specific OS Giken LSD installation guide for correct fill volumes by application

Features

• Re-engineered OS-250R V2 formula delivers faster clutch pack penetration and more consistent lubrication under extreme thermal loads compared to the original
• Built on a premium PAO (Polyalphaolefin) and Polyol Ester base for exceptional thermal stability, oxidation resistance, and film strength
• Proprietary S/P/B (Sulfur-Phosphorus-Boron) additive package surpasses API GL-5 standards, creating a reinforced oil film under extreme pressure conditions
• Advanced friction modifiers eliminate LSD chatter and vibration while refining lock-up timing for smooth, progressive engagement
• Despite 250-grade viscosity, the 80W low-temperature rating ensures immediate lubrication and friction disk protection from the very first revolution
• Signature blue tint distinguishes V2 formula from the original gold formulation; pull-tab cap design ensures a better seal and extended shelf life

Specifications

• Part Number: OS011-KA1
• Product Name: OS-250R V2 Gear Oil
• SAE Viscosity Grade: 80W-250
• API Rating: Exceeds GL-5
• Base Oil: Premium PAO and Polyol Ester
• Additive Package: Proprietary S/P/B (Sulfur-Phosphorus-Boron)
• Color: Blue (V2) - replaces original gold formula
• Volume: 1 Liter
• Container: Pull-tab sealed can
• Application Type: Rear Differential / Clutch-Type LSD

Included Components

• 1x OS Giken OS-250R V2 Gear Oil - 1 Liter Can

Product Description

The OS Giken OS-250R V2 (OS011-KA1) is the official factory-recommended gear oil for all OS Giken Super Lock LSD units. Developed over decades of championship-level motorsport use, the V2 formula builds on the proven OS-250R foundation with re-engineered flow characteristics for faster penetration into the clutch pack and more consistent lubrication even under the most extreme sustained heat. The proprietary S/P/B additive package goes beyond API GL-5 requirements, forming a reinforced oil film that protects friction disks, pressure rings, and bearings under high-torque, high-temperature track conditions. Advanced friction modifiers work in concert with the OS Giken LSD's mechanical design to eliminate chatter and fine-tune lock-up timing for predictable, smooth engagement.

OS-250R V2 is now the global standard for all OS Giken mechanical LSDs, fully superseding the original gold formula. It is compatible with and can be mixed with any remaining original OS-250R. The distinctive blue color and pull-tab sealed can make it easy to identify and store. Sold per 1 liter; multiple cans may be required depending on differential application - refer to the OS Giken installation documentation for application-specific fill volumes.