I had someone recommend this but I'm not sure if it is ATF+4 compatible we all know how cranky the 46RE can be about fluid. Yes I know that ATF+3 is the recommended fluid but i was just wondering if anyone has had any experience with the Raptor Blood. Here is a link.
http://www.partshp.com/supershift.htm

 

i wouldn't use it. ATF+4 is full synthetic, replaces ATF+3, costs $6-7-8 per damn quart and is as good as it gets. if you're determined to add something, use Smart Blend Red and nothing else.

http://www.lifeautomotive.com/Products/ATFP4001.asp

 

I seen that additive on the Patc site while looking at transmissions. Not an additive but I used and will use again in my new trans is Amsoil signature series multi vehicle synthetic atf fluid. http://www.amsoil.com/shop/by-produc...?code=ATFQT-EA
I also second the smart blend if you have to add anything.