mobil 1 10w-30 in the barracuda. Havoline 10w-30 dino oil in the 2001 Dakota (111,000 miles) 2003 misterbichy eclipse (70,000 miles) and 96 "less-than" grand caravan (197,000 miles) And always wix filters in every vehicle. Unless it's the wife's car and I'm in a hurry. Then it's whatever filter auto zone has on sale. Let's face it, she doesn't take car of her equipment so why should i care?