Can you wax your skis with car wax?

Yes. Ski wax isn't magic, it's just wax and you can use pretty much any wax, though it it may not work as well. I've used turtle wax on by snowboard many times. I'll generally rub some turtle wax on my board before I snowboard and it works well. I have a snowboard that hasn't been waxed in ten years and I waxed it with turtle wax and it worked great.Before I tutrle waxed it it was totally unridable, ice and snow immediately clung to the board but6 after the turtle was I was able to ride for the rest of the day without trouble. It doesn't work as well as specially formulated wax, but it helps to protect the wax on your board and extend the life of the wax job.