I popped the hood tonight and looking at the neg terminal there was a lot of corrosion. The car starts fine. Just seems to be missing a little power as of late. The reason I popped the hood. I was going to look at my plugs with 73K then I noticed the corrosion. Have not had a chance to clean the terminal yet. The weather has been rather hot and muggy as of the last couple of weeks. Should I clean and see if it comes back? Any ideas what may be going on.