Oil weep

[Jellybean]

One of my pet hates ,

 

Car is sat up 2 weeks now , tiny weep under the car , trail from rear subframe alone SRD undertray

 

Oil residue on top of the sump area , where the dip stick resides

 

Cam covers are all dry , no leaks , rear water pump , engine undertray below oil pump has zero oil residue, oil filter is all dry

 

Oil dipstick was removed from the sump a few months ago ; would a worn O ring cause enough blow back or what else around there can I check?

 

Sump , oil pump was all sealed with toyota black sealant , I do not think it is the sump

 

 

 

 

 

 

[SupraLEDrears]

i bought some of that oil uv dye and a uv led flashlight on ebay and found the leak. Cost me under a tenner and the leak lights up yellow.