Penrite Gear Oil 80W-90, 1L, premium mineral oil, API GL-5 API GL-6. RRP $11.99. Use in Hypoid & Limited Slip Differentials; Manual Gearboxes;Transfer Cases; Transaxles. Recommended for BMW and Moto Guzzi gear box and diffs. See Penrite site for MSDS and specifications. API GL-5/ gl-6/MT-1/PG-2 replaces hypoid 80W-90 and Limslip 90API GL-5 API GL-6 API MT-1 API PG-2