Synthetic oils

Amsoil is not that much more than Mobile 1 these days...maybe $1.50 per quart at most. I have been using it in everything I own for years and racked up a lot of miles on my vehicles with 20,000 mile oil change intervals.

Hate all you want, but the stuff works. My friend put 230K on his GMC Sonoma using Amsoil in every part of his truck. He changed the oil at 18-20,000 mile intervals and it didn't burn a drop of oil. Then the truck got totaled, but that is another story.

Regardless, any synthetic is better than dino oil. High end stuff will cost more but I think it gives better protection.

I try to stick with factory viscosity ratings. Currently I use Amsoil 10W-40 in my Dart because of the high zinc. They specify it's use for flat tappet engines...