Can anyone tell me where I can locate a Chilton book with images of changing the spark plugs and oil on this type of vehicle. Looks complicated to get to. You have to go through the inside of the van to get to the back side of the engine.

Get lost after that.

 

Do a search on this or any of the Ford sites and you will come up with numerous (how to's) on the subject.
Try Amazon or ebay for your book. Not sure, never bought one...lol

 

The oil change is super easy. It takes 6 qt. to halfway between low and high, don't add anymore, just leave it in the middle.

Fuel filter is under the driver's seat inside the frame rail, at about the rear door post. You might need a quick disconnect tool for it. You can get a cheap tool for about $5-10.

Most people remove the passenger seat to do this and you can get to the front ones after taking the air intake pieces off.

 

I see the E350 in the pic. How difficult is it to change out the spark plugs?