Falling out of fifth, My car goes from 5th to neutral by itself Options

[aslearvert]

Hi guys,

I've been having a problem with my car lately. It shifts into every gear just fine. And it will stay in every gear just like normal except for fifth. If I let my foot off the gas really quickly while I'm in fifth gear, it will fall out of gear and go into neutral. If I keep pressure on the gas pedal, or let of the gas slowly when I want to slow down, it will stay in fifth just fine. I have heard that this might be because I have low transmission fluid, which is entirely possible because I have never checked it or had it flushed, and I'm not sure if the owner before me did. I've also heard that it may be a synchro in the tranny. Please let me know what you guys think. Thanks very much!

[aslearvert]

I took it to get the tranny fluid filled up, and it seemed to work a lot better after, and it didnt fall out. But the bad news is the guy who changed it said it was so low because there was a major leak in it. In one of the seals, so now its in the shop and its getting looked at. I hope this turns out ok, and its not that the tranny needs to be replaced. Thanks for your help guys.