I'm not talking for an engine oild change here. I want to change out my tranny fluid for some Redline D4 ATF. Lubepros says 30 bucks for the swap if I'm bringing my own fluid, not so bad. Midas says they only offer a tranny flush for $80 and then they can put in whatever I want. So with that said, would you trust either place to do this and would you pay for the flush?