I maintain 1.25 miles of private gravel road. The dust is just terrible in some spots where houses are close to the road. I used to spread calcium chloride, but the prices are getting out of hand. I looked into millings and oil & chip, but those prices are way too expensive as well.
Yes, this...
If I can help it, that is. Of course I get caught by a shower now and then, but really try to avoid that.
With what I do, dusty conditions, as well as fine vegetation particles get into the radiators, and I've had a mess to clean out, before.
I've other people's radiators nearly completely...