On my 500 dollar baller ride I just replaced every cooling related component there was to replace.

Also all the tensioners, idler pulley and replaced plastic PS pump pulley with aluminum one.

Also replaced plastic transfer case motor gear with a brass one.

Also new thermal oil level sensor.

Next up...
Tranny flush and fill
Diff flush and fill
Outer CV boots
Rewire inside of the facking headlights......cause biodegradable effing insulation