The 2000 Montana came with a choice of front a/c only ( 9.6 qts.) 9 liters or with rear climate control (11.9 qts) 11.26 liters, please be sure which you have.
6 qts of oil for a 4.7 liter and 5 qts of oil for a 5.9 liter
5 qts. of motor oil
4 qts of motor oil then check and add only if needed.
under 2 qts of 10w40 oil
4.5 qts (5 qts when filter is changed)
5 qts with filter.
Start with 4.5 qts of oil, but it can take up to 5 qts.
4 Cylinder = 4.4 Qts. V6 = 4.5 Qts.
8.5 QTS
5 Qts. of oil
It takes 6 qts of oil