I have always like Mobil 1 products and it seems like a lot of you use the Moblil 1 Delvac oil but what about their ATF. I keep reading about transynd. Is it beter than Mobil 1? Also I saw some post about taking off some trans line and flushing the trans when switching over. That seems like a pain. Is there really that much left in there or is it adequate to just drain the pan. While I am at it what does the deeper pan do for you? Obviously more fluid but what is the advantage to that? Cooling?