My girlfriend got a 96 Ford Explorer to replace her Saturn that was totaled. It has the 4.0 pushrod v-6. theres no owners manual with it, so I was wondering what weight oil you guys recommend? I'm guessing 5w30, but wondered if you recommend something different for this particular engine. It has 95,000miles and I plan on doing a AutoRx treatment to it when I change oil. It doesn't run bad, but I think it could be a little better.