Just got a great deal on an '87 E150 passenger van with high top that will be used as a camping and hauling vehicle. It's got a 302 with, I'm assuming, flat tappets. Fuel injected. Four speed overdrive. Not the prettiest van in town but with a little elbow grease who knows... What would you recommend for oil? I'm thinking Max life 10/30. Also what would you recommend for tranny fluid? Thinking Redline D4. And finally, would you recommend changing the differential fluid or just let it sit? Thanks so much in advance!!