So even after replacing the cap via the dealership thinking the gasket may be causing the leak, I noticed that it's still weeping fluid from the cap. Then I just noticed this crack on the MC reservoir cap thread...

I'm thinking this is the culprit... Anyone agree? Expensive to replace? Do I have to replace the whole reservoir assembly?

I'm thinking this is the culprit... Anyone agree? Expensive to replace? Do I have to replace the whole reservoir assembly?