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Red Line MT‑85 75W‑85 GL‑4 gear oil (gallon) is formulated for manual transmissions and differentials that require GL‑4 or similar synchromesh fluids, and is recommended for Nissan 350Z/370Z families, many Mitsubishis, Hyundais, Kias and Quaife synchro applications. It avoids the reactive sulfurs found in GL‑5 oils so it is safe for brass synchros, offers quicker shifting and improved synchronizer friction, and protects gears while reducing notchy shifting even when cold.
Red Line MT-85 75W85 GL-4 Gear Oil - Gallon
