What kind of oil must be used when rifilling a differential on a 3door cossie(2wd).For topping up it is hypoid sae 90 sqm2c 9002 aa,but there is a max off 0,2ltr.Refiling needs 1 ltr with a oil with other specification but what kind off oil.

Thanks for your help

 

Just use good quality EP90. Castrol etc.