Is it needed in a Port injection engine. Valves are kept clean by the gas, so why worry about recirculated oil vapor being burned off.

Thanks for sharing the results! You'll notice more of the "milkshake or coffee" color in the colder months, this is due to condensation mixing with the oil in the catch can.

Mine has the same hesitation

Catch can is factory is that from blow by

Heard these are not good for trucks, no? Just askin, thought it created more pressure