burstable on demand the membrane is adapted to accommodate an accommodating container for automotive type motor oils and other viscous fluids the membrane serves to contain a fluid content within a container at first use while the container is being positioned for pouring and until the consumer manually initiates the membrane to burst so as to release the contained fluid into an engine or other equipment the present invention improves container content pour ability by allowing the consumer to manually initiate the release of a fluid content to a free flowing action at the proper time as to avoid fluid content spillage without the need for the use of a funnel or other pouring assistance application_number US 81619701 A description as illustrated and described by the drawings and other reference the present invention is a substantially flat disc like diaphragmatic membrane 10 membrane 10 is flexible and is adapted to accommodate an accommodating container 12 container 12 having an approximate capacity of one u s quart 32 fl oz for containing motor oil or other fluids membrane 10 is accommodated at the end of a threaded tubular spout 14 of container 12 fig1 and 3 more specifically membrane 10 is permeated to a circular rim 16 of spout 14 where rim 16 defines and surrounds a circular opening 18 which is the fill or discharge opening at spout 14 of container 12 fig1 and 3 container 12 is normally positioned for filling transport and storage with opening 18 of.