Oil filler neck 2CV6

The oil filler neck has another important function besides oil filling. The filling neck also provides a negative pressure in the engine. The underpressure ensures that the engine will not leak oil behind the ignition. A bad oil filler neck can result in a motor with a lot of oil leakage. This imitation oil filler neck does not have the best quality rubbers. Burton therefore recommends the original oil filler neck to be overhauled with the Burton revision kit. This set does have rubbers of the highest quality so that a leaking engine is a thing of the past.