I always have a tendency to over tighten so cork is always out for me. On my daughters neon I used "the right stuff" and no gasket but usually I just use a rubber gasket. Her neon leaked no matter what I tried so I used the sealer only. As far as the filler tube leaking, reach up around the base of the tube and see if it is wet. The fluid isn`t going to drip uphill.

I had a turbo350 in my 69 Camaro that we couldn't get to stop leaking. No matter what gasket we used. Checked the pan and it was a little bent around the bolt holes so we fixed it. Still leaked. Bought a new deep pan and it still leaked. Finally put a straight edge on the trans itself and found that it wasn't flat. After asking around, I was told that if somebody had taken a metal scrapper, lik a putty knife, to clean the rail, it's easy to cause this type of problem. We took a long file and carefully worked the area around the low spot and finally got it to even out a bit. Put it back together and no more leak. May be worth checking into.

Ok, I took my deep pan off again. And I thought that I found the problem. I was so excited!

When I laid a straight edge across the front of the pan rail (the rail that meets the front of the tranny), there appeared to be a little bend... exactly where it leaks (on the passenger side front corner). That was the only place that it didn't appear to be straight.

So rather then try to straighten it (and perhaps make it worse), I bought a new pan.

But this one appears to be bent in the same area.

So I'm ready to sell the car. Any takers? (just kidding!)

Now I'm thinking that I have a couple of options. 1) try and straighten the old one or 2) try the new one as is.

It came with a new rubber gasket that is less than 1/8" thick.

Does anyone know, am I supposed to use any sealant?

Thanks!

Tim...