PEAK SYNGEAR ULTRA 75W85 is a full synthetic gear oil meeting API GL-5 specially formulated for use in automotive light-duty, heavy-duty axles, and heavy-duty non-synchronized transmissions.
PEAK SYNGEAR ULTRA 75W85 is recommended for vehicles calling for a 75W85 GL-5 including vehicles with limited slip differential. It is also suitable for manual transmissions calling for 75W85 GL-5.
Please note vehicles requiring 75W85 GL4 we recommend PEAK 75W85 (PKGS7585).