There are several catch can systems available for the Lotus. We've tried them all and they all have failed in some way or the other and allow oil to find its way into the intake. Our system is not overly complicated like some others, it just works. It's super light weight, very serviceable, offers total protection from crankcase pressure forcing engine harming oil into the intake system, and it's easy to install.
Installation instructions are found by clicking here in the Tech Wiki , where you can get a better idea of this very proven and reliablesystem.
Please note that installation of our catch can will require moving or removing the windshield washer tank on the boot wall—- should you still even have the tank in the car.