Non ATF+4 in a A500 trans..?

Moparbaker said

As I've been told & followed so far an A500 (904+o.d.) only should have ATF+4 fluid, right?
Well I'm in trouble now; I'm stuck out of reach for ATF+4 & have to drive the car & myself away from where I'm at & the only trans fluid on the shelves here is normal ATF for some gm product that's been left behind...
So my question is: What can or will happen to my trans if I use normal ATF?

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What does the manual, or stick say? You mention that you have been told (by who) to use ATF+4. I have a 1992 A518 (727 + O/D) in my truck, and the stick says Dexron.