Bruski13

Miss read op. I use Lucas, like 9-10 bucks and pretty good

bdtaylor1979

Valvoline Synthetic. Make sure to look at your diff covers and see if they have a tag that says synthetic or not. Some have a tag that says synthetic. Some people may get away with/say its ok to use regular but I won't use anything less than what Ford says. Just my opinion.

Racinrhino17

The 9.75 calls for full synthetic. I used royal purple in mine.