[CAM ZL1]

The Service Technician and the Service Manager had to consult an engineer via a telephone call and they all came to the conclusion that it had to be the PCV System. They checked that all the hoses were not blocked and in fact functioning, but inspected where they come together. They noticed the hoses come together at a metal can and after inspecting this they found that a rubber grommet which connects this can to the intake manifold had a mis-punched hole. The blocked grommet caused pressure to build in the engine which caused oil to leak passed the main seal in both motors at high RPM's.

The sum of this entire repair is approaching a month long and a hair under $17,000 in parts of warranty work caused by one mis-manufactured rubber grommet which probably cost $0.40 and a PCV System that could've been replaced by popping the hood in twenty minutes if properly diagnosed.

It seems to me like this could be a sporadic issue with the ZL1 PCV System, if it is ZL1 specific, and if in fact this mis-manufactured grommet was not a one-time error. So if anyone finds that after driving the car at high engine RPM's there is noticeable oil leaking, I would definitely check the PCV System before assuming anymore serious repairs. Those of you who had called out the PCV System as a likely source of the problem, you called it correctly.