I have a few quarts of Mercon V in my garage that I bought in early 2011. Since then they have only sat there, for 2 hot summers and 2 cold freezing winters. My common sense tells me they should be just fine to use, but I wanted to see opinions if I should use it or not. Planning a pan drop and a filter change. Using the 4 quarts I have remaining in my garage would cut the costs pretty nicely i'll probably only need to buy 2 more quarts. Think it would be ok to use? I've poured 6 month oil in my truck before and it was alright. Even looked nice and clean. Same ought to go for the ATF?