Ronkh
Wax Waster
I can't say on mileage other than it's driven 7 days a week and it sits outside 24/7. I do live in Southern California so I don't see snow. We are going through a drought right now so not a lot of rain. The weather it's seen has been somewhere between 70-80 degrees within this time frame.
You should give it a try. It's one of the easiest application and removals. You would be a good candidate to try it in your harsh environment to see how durable it is.
Cool. Easy on, easy off works