Title says it all i ran A/C now I have an oil leak at one of cam shafts and it wasn't leaking there before I ran the A/C. Coincidence or is it that the A/C compressor caused excess crankcase pressure. Breather hoses and suction pump are all original. Ran A/C one day then noticed the oil leak spots on the ground from passenger side cam shaft the next day

Thanks

2001 Audi A6 Avant quattro 2.8 V6 180,013 miles