TriniLex

Is it possible to have an oil leak where the oil dipstick meets the engine? seen in this picture

KTGS300

It's unlikely, but if you find traces of oil in that area then it's more than likely it's coming from when removing your oil filter that is right above that area.

TriniLex

I cleaned it up pretty good after oil change and it came back. Valve cover was already changed.

KTGS300

Have you checked if the oil filter is tightened and make a good seal to the surface?

TriniLex

Yep New filter installed same issue. Dont see it coming down from the top anywhere.

KTGS300

In that case, you should try replacing the O-ring on the dipstick tube. Only one bolt and a plastic clip are holding the dipstick tube in place. Once you remove the bolt at the top, you could just pull the tube out from the upper aluminum oil pan. Check condition of the O-ring, it may need to be replaced. Part number is 96721-19010.

DundukovEM

I also had oil leaking from the dipstick tube. Replaced the O-ring.
But there is another source of oil that can end up there - the front crankshaft oil seal.
When it leaks, it flows out of the weep hole in the lower timing belt cover and the car's airflow distributes the engine oil over the sides of the oil pan all the way to the end of the block.

In fact, there are several places on the front side of the engine where oil can leak - 2 camshaft oil seals, a VVT-i intake camshaft gear, an oil pump - cylinder block seal, and a crankshaft oil seal. The oil then flows by gravity to the bottom of the cylinder block (the mating surface of the oil pan) and the airflow distributes it laterally to the rear.

XYZLexus1

Replace the o-ring about $3.00.