Bob,
I had the same question on our new Sedona.
When I called the KIA parts department they said there are no washers on the oil or transmisssion drain plugs, although the owners manual says to replace the washers at every change.
When I removed the oil drain plug for the first time I looked for but didn't find any washer, so I didn't use any when I replaced the plug. I'll let you know if it has leaked any since. The mating surfaces of the plug and pan seemed well machined.
John
I had the same question on our new Sedona.
When I called the KIA parts department they said there are no washers on the oil or transmisssion drain plugs, although the owners manual says to replace the washers at every change.
When I removed the oil drain plug for the first time I looked for but didn't find any washer, so I didn't use any when I replaced the plug. I'll let you know if it has leaked any since. The mating surfaces of the plug and pan seemed well machined.
John