Stretch, a couple of weeks ago I was doing valve guide seals and saw the mark I had put on the front pulley marking where to set the engine so the plug would be at the right place for servicing the trans. I checked and of course the plug wasn't there. So before I put the rockers and plugs back in I looked for the plug by bumping the engine over with a remote start button. I could have missed it but that is the way I found it before. Keep in mind, I was outside on a gravel driveway and had NO helper.
When I do the service I will look for the plug again. If I can't find it I want to be prepared to do it another way if possible.
Is it possible to add a drain plug without removing the trans?
Thanks again for any help.

PaulM

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84 500 SEL (307,xxx miles)