Hey all, As I was removing my engine coolant cap, I noticed it had something on the body of reservoir different than the inverters. There’s a nipple coming off of the body of reservoir just below the neck where the cap is and that nipple is capped of by what looks like and size of a tire valve cover. Never noticed it but can someone confirm they have it too and my 2011 Prius is not an aberration? Why is that there? Thanks!
