Hi I wonder if any one can help. We've got a 2.5 with an auto box w reg. Driving through town last week the bus seemed to go into neutral even though it was in drive, went through the gears but nothing. Tuned the bus off and started again and it went into drive but then stopped working again. Kept doing this. Garage drained oil and replaced oil / filter to correct level.Drives but doesn't seem to know which gear to use now, drive or third. Is our gear box on its way out.