I do my own oil changes and I noticed its either the rear main or upper oil pan back-end leaking. Took it to the dealership, and they just sprayed it off and said no leak after throwing a fit they put uv dye in it and within 60 minutes the dye showed up but now the front cover is also leaking worse then the first leak. If Toyota is going to use 0w8 oil they better learn to seal them up real good.