I own a Camry that starts massive oil shortage all of a sudden , multiple seal leaking , I almost gave up that my engine was bad until stumbled on a trend about pcv , which is responsible for engine ventilation, it happened that my is bad and blocked which resulted in my engine oil overheating and oxydicing ,and excess pressure in the crankcase which lead to seals damages , after changing and replacing seals everything is now ok no shortage please take note

https://www.dummies.com/home-garden/car-repair/fuel-system/how-to-check-and-clean-the-pcv-valve/