right im changing my box oil this weekend and i can get some synth 75w 90 gear oil through work quite cheaply,made by quantum (i use quantum 5w 40 fully synth engine oil and my car loves it so i know its decent stuff) the thing id like to know is is this viscosity ok for my box? i know renualts dont have the best boxes so id just like to check before i change it
many thanks
many thanks