I am starting the Intake manifold gasket job on my 2000 Venture - 140,000mi. I have oil in the coolant (brown stuff in the coolant bottle) but the van is still running fine.
I have the Dorman gasket kit on order and the o-rings for the injectors (there is only 4 ??) and the valve cover gasket.
I should start disassembling later this week (Thursday ?)
Wish me good luck !