Doing a transmission drain and fill on the 2014 Edge. Uses Mercon LV fluid. Undecided on whether Lubegard is necessary. I have used before and it is great in older fluid specs. All their literature says it improves Mercon III to Mercon V. This is already better than Mercon V. I have also heard that using in low vis fluids, like DeX VI or Mercon LV, can actually increase viscosity, which isn't good. Thoughts?