I'm new here and some what overwhelmed by all the good information here. I've been reading through all the posts and I'm overloaded by all the information. I own two Mopar MiniVans, both are 1996 models. One has the 3liter motor with 82k miles and the other is a 3.3liter with 156k miles. My question is "what would be the best dino oil to use in them" ? Also what viscosity?