drain hole is bottom , fill hole is top.make sure top one will come out and go back in before going any further(it'll make sense when you think about it).i understand these plugs can become rusted and won't budge at times.

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'95 s500 (bought for wife but can't bear to share!!!) 125kms
'92 legend 180kms
'88 tbirdturbo(fantastic car-only regular maint.)120kms
'87 mustang gt(gone)
'86 tbirdturbo(gone)
'85 mustang gt(gone-but not forgotten)