From what I understand the filters in these newer transmissions according to what I have read are supposed to be lifetime filters, I don't know if they are that good or not just what I have read
as far as your 3rd party warranty's there are basically 4 different levels, 1st level being low level powertrain warranty for if the part breaks before it's expected life (does not cover normal wear & tear and does not cover a part if it broke after it's expected life) and is very minimal and cheap, 2nd basic powertrain and covers basic wear & tear, 3rd a higher level with powertrain and a good portion of the electronics, 4th highest and covers pretty much bumper to bumper, basically anything that breaks but not everything. a lot of people buy the cheapest one and don't realize it really doesn't cover much of anything and then you end up with a lot of misunderstandings and complaints because they didn't bother to read the details and the salesman just told them what they wanted to hear so they could get that extra chunk of money in the sale and the customer walks away thinking they have a nice warranty when it's total crap. Always read the details.......it's all in the fine print and is worded legally so it's in there favor. Super easy to get screwed with the low level warranty because of the way it is worded.