Hi all. I picked up an '05 Dodge Neon a few months back, and it's looking like I should be changing the ATF fluid especially with a cold Colorado Winter ahead. I've never owned an automatic transmission in a vehicle so I need help. I'm not too familiar with the ATF+4 Spec fluid. My question is this, Do I go with OEM Mopar fluid from the local Dodge Dealership, or do I go pick up an ATF+4 compatible fluid from Castrol or Mobil 1? All help is much appreciated. Give me the good vs bad on OEM vs other.