Car washing and minor maintenance

[Arthur Banks]

Do any of you landlords allow car washing (tenants responsible for all utilities) and minor car maintenance on your properties? I'm under contract for a 2 flat in which I am having the plumbing redone (stolen copper pipes) and planning to make sure the front and back spigot are plumbed one for each unit. Which lead me to thinking of summer and car washing. Which led to car maintenance. Do you allow car washing? Minor car maintenance? I don't think I want to allow maintenance, especially fluid changes. Car washing I don't think I see a problem with. But wanted some insight into what others are doing.