We have a 2018 Forester that we would like to do some easy beach driving with on tracks that the car can comfortably handle. But that means sand and salt. Of course we would thoroughly wash under the car after (I’ve always run a lawn sprinkler under other 4wds for an hour or two after using them on the beach). I was wondering what else I can be doing though to try to prevent rust? We would like to hold on to this car for several years. Thank you!