17 m8000 oil everywhere

Just brought the bosses sled in the shop. It's a 17 m8000 limited with 300km on it.
There is oil blowing out the pipe joints, it's in the pipe and can. Also cleaned a bunch from the intake. Pulled the plugs and there was a small piece of silicone stuck in one plug on pto side.
Sled has been driven once in 4 years. Put my scope in the y pipe , attached pictures.

Any idea what's going on?