Red Line 75W90NS GL-5 Gear Oil

Red Line 75W90NS GL-5 Gear Oil is a fully-synthetic, ester-based lubricant engineered for manual transmissions and transaxles requiring GL-5 gear oil. Its unique non-slip formulation is specifically designed to provide optimal synchronizer function, making it ideal for applications where most GL-5 oils are too slippery for proper synchro engagement.

Key Features

• Formulated for transmissions and transaxles; slows synchronizers for smoother shifting across a wide temperature range.
• Widely used in Ferrari, Porsche, and Subaru transaxles.
• Suitable for muscle car transmissions, including Ford Top Loader, Muncie, Borg-Warner T-10, and Super T-10.
• Contains extreme pressure (EP) additives for wear protection, but lacks friction modifiers to maintain synchro performance.
• Enhanced copper corrosion protection extends synchronizer life.
• Supports lock-up in weak limited-slip differentials; compatible with Red Line Limited Slip Friction Modifier for tuning slippage.
• Used with clutch-type limited-slip differentials in racing for maximum lock-up.
• Non-corrosive formula is safe for all synchro materials.
• Recommended for API GL-5, GL-6, MT-1, MIL-L-2105E, and SAE J2360 specifications.

Additional Information

• Appropriate coefficient of friction for most manual transmission synchronizers; prevents excessive slipperiness common in other synthetics.
• Not for use in differentials with hypoid gears (use only in specified manual transmissions and transaxles).
• Provides excellent gear and synchro protection with balanced slipperiness for improved cold-shifting performance.
• Compatible with petroleum and other synthetic oils.
• Suitable for both high-mileage and low-mileage transmissions.

Technical Details

OEM Compatibility

• ALFA ROMEO
• AGIP 75W-90 SX
• AGIP SXA 75W-90
• DODGE/JEEP 4549636
• FERRARI 75W90
• GM 88862475, 88862476
• MOBIL MOBILUBE 75W-90 SHC, DELVAC 75W-90, MOBILUBE PTX 75W-90
• PORSCHE 000 043 204 19, 000 043 204 71, 000 043 210 12, 000 043 304 71, 000 043 305 00, 000 043 305 48, MOBILUBE PTX, N-052-911-CO, SHC 75W90
• SHELL SPIRAX EP 90, TRANSAXLE OIL 75W-90, SPIRAX S5 ATE 75W-90, TF 1055
• SUBARU SOA635011
• T-10, TOP LOADER, MUNCIE