The CPO inspection is completely up to the dealer and technician. Some will legit go through the checklist; others half ass. Use your trusted mechanic and walk through the vehicle together; and best if he can lift it so you can check underneath.
Two kinds:
spirited driving on the PCH.
cruising five miles over the speed limit, 1000-2000 rpm. Ultra smooth.
Four bangers and six bangers. Come on, bro.
Their rental cash was dangerously low, so they needed you to help pay it. The problem is their overhead will always entice them to lie. Which is why an honest mechanic is worth his weight in gold.
The Car Care Nut schedule seems the most sensible. Replace engine oil every 5000 miles. Change transfer case and rear differential gear oil every 30,000 miles. Replace the transmission “drain and fill” every 60,000 miles with WS ATF. The filter never really clogs unless you never change the tranny fluid. I personally will be changing 30,000 miles just to be a little cleaner. Note you should do flushes, or drain and fill every 10,000 miles, as you need some debris to help with gears engaging. Too often and the transmission can slip.
Ignore the dealer as they’ll change whatever they think can extract money from you. And they’ll follow garbage advice like lifetime fluid, or go the other way and recommend flushes or cleaning out sludge or carbon build up.
This is a very, very important note: flushes aren’t necessary if you change the fluids like you’re supposed to. There shouldn’t be gunk waiting to build up in the first place.