I have not found a need for anything on a Vincents oil feed yet* but I have a KSS Velo which is prone to sump filling, realistically its only after a few days in the garage so if its going to bed I turn off the oil tank tap and a curly worley key lead comes from there to a hole in the front brake lever I cant get on the bike without uncliping the lead thus remembering to turn the tap and securing the lead to the saddle back.
*In the spring I do need to drain the sump and pop it back in the top (I change the oil in the autumn before the lay up)
*In the spring I do need to drain the sump and pop it back in the top (I change the oil in the autumn before the lay up)