I thought the megs hyper dressing is petrolum based? If it is i wouldn't cut it, the only dressings that should be cut are those that are water based. Its not cutting corners as some would say. I have a few bottles mixed up of the same dressing in different ratios. One for interior applications, engine or exterior applications and so on. I don't want the dashbord looking the same as say the wheel wells or engine ya know.
Why waste product, if you can cut it and get the results your looking for than why not? I wouldn't go past 5:1 ratio though.