And that is?
I don't drive enough for mileage to be an issue. They sit in the garage 29 days out of each month. But I'm curious about slow leaks and I might even use it in lawnmower tires for the same reason.
Cost can vary depending on the brand and quality of equipment. Biggest variable is the tank, which cost significantly less used than brand new (& can usually be found easily on Craigslist or fbmp
But you can do the whole set up for roughly $150 (plus fill) assuming you get a used tank for around 60 bucks. Can buy a regulator for around $40 and the couple feet of rubber hose and the brass sittings required for less than $50. Oh yeah, and you’ve got to take it to get filled, less than $20 locally at welding supply shop.
My set up was around $240, that’s because I sprung for a quality all brass regulator and the quick connect which was not required, just makes it easier. The only true consumable is the hose which is susceptible to dry rot if stored improperly. Everything practically lasts forever if you take care of it.
