I flush old school style, pop a line at the rad, you need a few feet of gas line a fitting and couple buckets, drop a case of oil in the clean bucket, and the line in the empty bucket, "2 guys fire it up, figure out real quick what line is sucking and whats dropping fluid", hit the right buckets with the lines, at idle, run through the gears a bunch have a bucket watcher when empty shut down reconnect and your flushed. always drop the pan, do the filter and wipe out the pan first.