V60 2013 oil leak!!

[Nemerkh]

V60 2013 d5, 60k.
So i noticed my injectors are sitting in a small pool of oil. Nothing dripping to ground or guard, defo not diesel. Car is running absolutely fine no warning lights performance spot on. Cleaned and wipped, back again. Oil cap dry.
Habe been reading but not found ANY similar info on the v60
Called dealership, they say never heard of this before.showed a volvo tech, he said rocker cover gasket and quoted 400£ to reseal all in. Has anybody got any experience with this?
Also,did a glove test, glove inflates on idle.but sucks in when revving, but as muchbas i searched, coukdnt find whether my car had a PCV?
tjanks