I noticed a few drops of oil under the FJ & it turns out the washer was F'd up. Someone (don't know who or where), said, "They are 1 time use washers", I said I've never heard of 1time use washers. Anyway, I replaced the washer with a copper washer. I think I'll use a new one of these copper washers every time I do an oil change. Question really is: Has anyone had any issues with this drain plug washer? If so, what did you replace with. Has anyone reused the original washer? Want to know if it's just me, maybe just over tightening.