I have a 09 9870. When i go down the road for extended periods [10-15 miles] The main gear case oil level and/or temp. light shuts machine down. dealer and Deere believe scavenger pumps are not keeping up pumping oil back to main gear case. If you stop it will go again after a few minutes. operates perfect in the field. I brought it home at 20mph and did not have this problem but i did stop for traffic and this would have let the pumps pump oil back. Anyone Else had this problem????