Tender For corrigendum : procurement of automotive lubricants for tata & ashok leyland bs vi vehicles - rear axle oil required for bs-vi leyland vehicle. (80 w 90), gear oil required for bs-vi leyland vehicle.(80 w 90), engine oil alt ck-4 10w 30 required for bs-vi leyland vehicle., rear axle oil required for bs-vi tata vehicle.(fe 80 w 90 ll), gear oil required for bs-vi tata vehicle.(sae 80 w 90 ll), engine oil 10 w 30 ck 4 required for bs-vi tata vehicle.