Review on Pack of 20 Prime Ave Oil Drain Plug Washer Gaskets for Mazda Part# 9956-41-400 - Compatible and Sealed by Arnold Carrigan

These washers are good quality and do a good job. I have read all of these comments and the negative comments are related to oil leaks. If you do a thorough research you will find that Mazda engines, especially Skyactiv, have a tendency to lose oil through the drain plug, which means that plug needs to be replaced as well. If you have an M18 hex drain plug, they will leak after your engine has run 80,000 to 90,000 miles. This is not the fault of the crush washers, also replace the drain plug and check for leaks. Why is it flowing? The threads on factory spark plugs stretch and fail over time, leading to oil bypass, which is why 70% of Mazda Skyactiv owners have to replace the engine or scrap cars with around 160-180,000 miles due to a burned out engine head. Seal or cast a connecting rod or bearing due to oil leakage. So please take my advice and replace the drain plug and you will see the oil stop and you will save your engine.