Any idea what might be causing this oil leak?
I'm using Mobil 1 full synth 10w40, no leaks. Full synth is more prone to leaking from small gaps than dino oil but first I'd suspect a pinched o-ring, loose bolt, or tiny piece of grit somewhere on the sealing surface.Scott
Of course to check this you'd need to remove the cover which would drain all the oil. If you don't want to buy new oil just get a clean aluminum disposable baking pan at the grocery store. Then you can collect the oil and put it back into the engine if you want, without the contamination of whatever gunk live in your normal drain pan.Scott
Mine leaks a few drops, just like yours, keeps the rust away. I just put a pan with kitty litter under it and call it good.
My AVL engine with 3 drain plugs and a British design oil filter, don't leak a drop.