Freetech disc valve cover Apr 16, 2019 17:06:33 GMT Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Colin Jones on Apr 16, 2019 17:06:33 GMT Hi,Do people fit an oil seal to the centre of Freetech disc valve covers or in use does the petrol/oil mixture naturally centrifuge to the outer edge of the disc and away from the shaft?Colin