Pig Pickin Cake

I remember PigPickin as one of my favorite desserts when I was growing up.   I first ate it when I was a teenager in East Texas, probably at one of my great aunts.

QtyMeasDescr
18.25 Ozpkg. Duncan Hines Butter Golden cake Mix
11 Oz can Mandarin Oranges, Juice Reserved
4 LgEggs
1/4 CVegetable Oil
16 Oz pkgFrozen Whipped Topping
15 Oz pkgCrushed Pineapple, drained
3.5 Oz pkgInstant Vanilla Pudding