Let's get a couple of things straight, Mylo..... someone may choose to e-mail you... most here wont. Ya don't get to slink in, rape someone for free info and have them take off their pants to save you the trouble of ripping them.... Here's a reply.... a very good reply... and it's free.... and this is all the leg work I'm going to do for you or your sister....
Go to motorcraft.com .... Geez, I'm sorry I didn't do the http thing and turn it into a link.... Near the top of the page, theres a tab marked "technical resources"... Click that and a new window will open. Down the left side, you will see a tab marked "owner guides".... click on that and you will get a screen with some drop downs.... if you need, it will even prompt you to install Acrobat Reader. What you will see (and can copy and even print) will be the whole freakin' owners manual for your sisters van....
How on earth did I find that, you might ask??? Google, young sir..... Google.
You'll have to forgive my bad attitude.... I was doing OK up until you started telling us stuff we already knew, following it up with a needless comment and then telling us exactly what was acceptable for your busy lifestyle... deal with it, take the free info, learn from the experience and move on with your life.....
Wish your sister a Merry Xmas....