SMR contains a mineral oil similar to what is in IHG. This aids the product in a few ways. First it provides lubrication for the abrasives, and second, yields a better looking finish after it is buffed away.
I would wash the car, or at least rinse it and QD it. if the QD smears, i would go back and use Z7 wash or dawn on it. Not only will the oils interfere with the bonding of zaino, but they could still contain some fine suspended abrasives.