Question: Can I just add a tablet to the washer bottle and fill with water.
Answer: On some washer bottles you can do this as the tablet will go in fine straight into the bottom of the tank. On some vehicles there is a filter so the tablet cannot get to the bottom of the tank and will not dilute.
Question: What temperature does this go down to.
Answer: This is an all season use as it goes down to -3 degrees, although if you live in an area that goes lower than this you will need to use on of our other screen wash product, there are several ranging from -7 to -36 degrees.