Gear selector seal leaking

[That]

I have a tranny leak, I suspect is coming from faulty gear selector shaft seal. Thus leak seems to be diminishing each time I drive Fiat. Could it be that as level of oil goes down, the seal is going to leak less and less until it gets to certain level, then stops?? (Hopefully, there will still be adequate oil in tranny to properly lubricate)
Just a theory I had. Tell me if this is possible, or that I am wrong. Thanks to all.

[Nanonevol]

Why not check the level? Unscrew the fill plug on the right side of the transmission.

[That]

I did. No oil came out, but I just changed it last week. My plan is to wait til leak quits, (hopefully soon) then refill case to level of fill plug and measure how much oil it required. If only an ounce or two, will just leave as is. Obviously, if leak continues for quite a while and it requires more than a few ounces, I will replace leaking seal.

[vandor]

Actually very little oil can make quite a big puddle, so you have to have a pretty healthy leak for the level to drop. The trans holds about 1.5 quarts of oil. Imagine if you poured just half a quart of oil on the floor! It would likely cover an area the size of the car.

[That]

Csaba, thanks for reply. I'm wondering if the leak will stop after oil level drops to a certain point in the case? It has diminished somewhat. What makes it worse, the leak drops onto the driveshaft and the gets slung all over underneath . However, when I pArk in garage, leak is always in same place. A couple inches aft of the 'donut' connection, directly under the shifter pivot plate. You think it will eventually stop? Then, if it does, will the level of oil still be sufficient to protect and lubricate tranny?? Sorry for so many questions. I'm an old man and have no one to do my repairs so try to minimize them. Thank you for your time and expertise.

[vandor]

No, I don't it will stop.

[KevAndAndi]

Don't want to put words in anyone's mouth, but I would guess Csaba meant to write, "No, I don't think it will stop."