1991 Loyale FWD. Inner front wheel hub seal needs replacing. With old seals [inner/outer]  pulled out, can I push fresh grease through the bearings while they are still in the hub? I can scoop out the old grease as I go. And is it better to see if those seals are available from Subaru? Bearings are still good. I don't do off road driving. Thanks

I just replace my bearings and they arent terribly hard to remove and replace.  You could pack them when they are in the hub buti dont think you could do it as thoroughly as you can with them out 

There is no point in replacing the seals if you aren't replacing the bearings.

 

As an alternative, if OEM are not available, you might want to see if Altrom seals are available from NAPA . They are OEM quality .