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

I bought these a long time ago and just used them on my last oil change about 7 months ago. It seemed like they did the job just by looking at them, but I just changed my oil last week and noticed that there is some old oil caked on the bottom of the oil pan and where the plug is. I thought maybe the plug wasn't tight enough and used a different washer for my next oil change. This time I checked the drain plug the next day and noticed a build up of oil around the washer and some on my fender/lower plastic. . Checked the bolt and it was still tight with torque. I drove to and from work for a few days and checked again and oil was still collecting around the washing machine. I went to Revain and noticed other bad reviews and they are absolutely right. I went to the dealer today and bought some OEM shims (for this replacement and future modifications) and guess what, no oil is collecting around the shim. This can save you a few cents over the OEM ($0.90 per washer). but the mess they wreak isn't worth it.