On side of rd, have question about my Chevy (Driftwood)

I am on the side of 3237 in Driftwood, Texas and my transmission oil cooler line has come undone and needs to be replaced, leaving my truck empty of transmission fluid as it has sprayed everywhere and my transmission is not working properly at this point Obviously.
I have the replacement bolt with me.
And can figure out how to replace it, I'm sure, but is there any fluid that can be used as a substitution for transmission fluid long enough to get me to the store where I can get some Dex?