Which oil for barrier differential?

Hello to each other, I have a question about oil in the barrier diff. The 250ml of the barrier accessory with pure is known to me. Normally the Diff is then filled up with 750ml SAE90 full. I looked at the oil at Liqui Moly and then I came to the hypoid transmission oil (GL 5) LS SAE 85 W-90. As a description it says: “For the highest loaded axle drives with and without barrier differential – especially for vehicles in which the unit or vehicle manufacturer requires an oil with Limited Slip additives (LS). The regulations of the vehicle and/or aggregate manufacturers are to be observed” And if I have understood this correctly it is the Limited Slip additive of Opel which has to be pure. In the technical data sheet of the Liqui Moly Hypoid transmission oil (GL 5) I want to give thanks to someone for the banting experience of the SAU 85 W-90.