As a result of offroading on saturday i was losing air in my tire. I made it home put air in and was driving around on it for 2-3 days then last night, I went to drive and it was flat. What is the best way I should go about handling this. I am unsure if it is a nail or puncture. Should i change to the spare and take it to midas? Or try to use that green slime stuff to plug the hole?