To the untrained eye, of mine seeing only the surface and the the root cause. As my service for Mike at On Track Automotive goes: I called one Saturday, mentioned my reservoir coolant was very, very low. Added water and watched the level over the next days. About this time I received reminders of upcoming oil change. Although, the oil change notice came early, Mike inspected, my coolant and found a upper hose leak. Just want to say my vehicle has a nice paint job, but it useless without a functional engine. Just want to KUDOS to Mike, THANKS SINCERELY