Three to nine months. Three to nine months. According to the query of automobile maintenance technology network, the mineral oil of Vickers wl 10700 oil filter can be used for 3 to 4 months, semi-synthetic oil can be used for 6 months, and fully synthetic oil can be used for about 9 months. Vickers filter is a filter invented by JohnDoane, Jack, WickS and PaulG, which is mainly used in agricultural machinery.