14mm Aluminum Crush Washer. Using a full synthetic oil may help to reduce oil consumption if a mineral or semi-synthetic oil is being used. Mineral based oils consist of a mix of different sized molecules and the smaller ones can evaporate and then burn relatively easily, increasing the rate of oil consumption.
The Gold Plug SW02 14mm Aluminum Drain Sump Plug Crush Washer SW-02 - Single Washer would be ideal for installations where preventing sewer gas backup and pipe clogging is crucial.
