My double cab 2012

Just got this truck and joined this forum.....since getting the truck 2 wks ago Ive added a K&N air filter ...made a noticeable change in throttle response ....and today thanks to this forum I did a complete trans fluid change..........with 33k on the truck I thought it was about time for it to be done.......fluid was alittle dark but not used up...still I myself wouldn't leave it in there for 100k......maybe 40ish........I would say 45k is a good time to change.....but if youv done a lot of off-road stuff soon is better.....next is spark plugs ...and before the snow fly's ...front and rear diff and transfer case.......the step by step post on here was great.......works perfect.....