Hi guys new here, My 2002 Volvo V70 X/C I recently changed the driver side axle cause it was kinda bad, few days later I noticed oil leaking from the axle brown/golden oil..to be extra sure I cleaned the whole engine underneath and I did put uv dye on the motor then checked the leak trail from the axle with a black light it had uv dye on it. At this point don't know what to do I thought it could've been the radiator that is internally cracked or a rear main seal that went bad but to leak oil from the engine to the transmission is 99.9% impossible almost, I already ordered a axle seal cause I know its bad or out of place, but what worries me the most is the oil mixing up...Any help would be greatly appreciated.