My old trans went out when I was traveling back to SC from tennesee it had lots of miles on it it was orignal. I got it home with my cuzns towbar but anyways I pulled my trans out of my truck and it poured out red ATF and I went to get another trans out of the junkyard and it poured out red ATF as well but the trans is doing fine in my truck that I pulled out of the junkyard I put ATF back into it. My question is basically is ATF safe for my trans and was that am I surpose to be using?