99 Solara V6 Auto Axle Fluid

Where the heck is the filler plug for the trans axle?? The drain plug is where my Haynes manual says it is, but the filler plug is a blank hole. I looked all over. I give......where the heck is it??? I don't think it's been changed either after 150K. I let a smidget out and it look metallic.

I looked in the service manual that is posted. Shows the same thing, like there is suppose to be a filler plug. There isn't one on the transaxle. Just a casting for a hole. I guess I'm suppose to believe that on the 1st service, they drill out the casing and tap a hole??

Bump...............

Another Bump............