Advice on Trans/Coolant Problem

I was on the Frontier Facebook page yesterday and seen a few guys having problems with coolant getting into the tranny. I want to check mine and see before the problem arises. I saw the bypass and will most likely do it this weekend. How do I go about checking the actual fluid? from the dipstick it looked fine but I wasn't looking specifically for that.

I have an 07 LE crew cab v6 auto 104k. I also seen some have the extra smaller radiator in the front is this for the tranny fluid? If so does that mean I'm safe from having to worry about it?