M156 Oil Catch Can
m156 Catch Can
The factory crank breather system allows oil to circulate back into the intake system, through the supercharger ad back into the combustion chamber.
Having oil caked onto your intake valves can cause the following symptoms:
- Loss in power
- Loss in fuel economy
Catch can setups prevent oil from re-entering the intake tract, check your catch can periodically and empty it when you find oil in the canister.