2007 Santa Fe 2.7 front diffrential Fluid fill plug
 

i changed my engine oil and wanted to change the trams fluid but ended up removing the drain plug beside the engine oil drain plug which i think will be the gear oil (differential Fluid). not really sure if it is as i have checked online and cannot find anything. picture attached.
i have looked around but cannot find any fill plug.
1) anyone knows where the fill plug will be?
2) what is the weight and type of oil for this car