Quote Originally Posted by 37 Caddy View Post
Thank you.

I knew I was asking the right crowd. I haven't spent enough time under the car so I am guessing that I have simply never noticed the fill hole. Thanks again.
Don't feel too badly. I changed the rear cover on my Explorer and when I took it to a local service center to have it topped up, the "mechanic" insisted that he had to remove the cover to fill it with oil. He was not aware that there was a filler plug. Now remember, this person regularly changes oil and supposedly checks the fluid level in the differential as a part of that service.