Found : head gasket oil leak on 2 used 2010 YARIS ...

[Hershey]

During the O.C. earlier I noticed some black pieces in the opening of the oil fill hole . Looks to be pieces of the black silicone sealant used during the fix . The tech went overboard with the sealant . Plan to try to open the oil filter to see if any silicone gathered in it . Here's a pic of the oil fill hole and outside of engine where there's the black F.I.P.G. sealant all over it . Makes you wonder how much ended up inside the engine . Top pics are the back of timing chain cover / valve cover and the bottom picture is of some black pieces ( circled in BLUE ) inside oil fill hole of valve cover . There were also many pieces in the bottom of the bucket where the used oil was drained into . This was the 3rd O.C. since the repair and these black pieces are showing up .