I was poking around tonight with my new to me 86 60. I pulled the air filter and noticed it was dripping in oil. It seems to be coming in from the rear hose that runs from the rear top of the air filter to the rear top of the valve cover. That hose just goes onto a metal nipple? Or is there supposed to be a PCV valve there? And could this at all be related to the fact that I just noticed the PO forgot to reinstall the dipstick, meaning as of right now it has no dipstick?