Sometimes I've noticed that the vacuum lines underneath the SC snout get greasy, with what appears to be oil I normally clean them and stay like that for a while, but I think it's getting worse now.

It's been less than a month since I installed the 3.25 pulley and it looks already dirty from the inside.

Today I also noticed the fuse box was stained with oily substance as well as the vacuum lines underneath the snout.

The oil has no color to it either.

I'm thinking this is most likely SC oil. Is there a way to check the level? If it is SC oil where can it be leaking from? the breather and where it joins with the housing?