Haven't heard too many problems with refilling the minivan engines in any circumstance, so, after hoses are on, fill with fluid, listen for the hiss, which is the air leaking past the thermostat in the engine (I always drill an 1/8th inch hole to help this purge and any tiny bubbles that may collect under the thermostat), give it a couple minutes, squeeze the upper hose to help burp the hose itself, then comes the burping after the initial fill by turning on the van, let it idle. With the cap still off, watch the fluid circulate and possibly drop. Turn the heater on full so the most fluid will flow through it, keep an eye on the fluid, rev the engine a couple times, no need to really push it above 2500rpm or so, so just blip the throttle a few times, pushes fluid around harder to move air. When the temp rises and starts to overflow, cap and fill the overflow to the hot level on the overflow bottle, watch the temp gauge, blip the throttle a couple more times, drive it around the block. About a 20 minute job, and a five minute drive is about it.