using the wrong nuts!

[TX82FIAT]

Folks, I've worked on eliminating oil leaks on the car over the last three years. I had a brief week where there was not a drop of oil under the car. This morning i checked under the car after a 30 mile fun run. There was a drip under the transmission again. I'm now questioning the type of but uses. I used mid grade nylon locking nuts M6 X 1. I'm thinking that nylon nuts are not a good nut for the transmission pan for two reasons. 1. heat on the nylon. 2. limited thread on the stud. I have been thinking of using the serated flange nut as a replacement. Thoughts, am i out of my mind. Is an oil leak that drops the equivalent of a 3/8" spot worth worrining about at this point?

[RRoller123]

If you are sick like me, every oil leak must be tracked down and (eventually) destroyed. It is a holy journey, a quest.

[azruss]

boys, you are pursuing an exercise in self imposed insanity. If you dont want it to leak, dont put oil in it. I have a hard time believing that a nylock would melt to the point on loosening its grip. You sure can tell by removing one and see what it looks like. You could replace them with all metal dohicky but i wouldnt expect it to stop your leak. Just remember, that if it doesn't leak then its not Italian.
Seriously, I have a leak about the same size. It comes from the weld around the oil drain plug and leaves a mere smudge on the garage floor. To me, this is not a leak. It requires me to go under the car once a month or so with a spray bottle of degreaser and a paper towel to restore balance in the universe.

[RRoller123]

eventually, just weld the leak closed........

[vandor]

Ray, did you 'unbend' the pan at each hole? When the pan nuts are tightened they bend the edges of the hole up, so the pan has 10 protrusions, one at each hole. I lay the pan on a piece of wood, put the ball of a ball peen hammer on the hole, and hit it with another hammer. Once done I lay the pan down on something flat to make sure it is flat.
Also had good luck putting aviation permatex on both sides of the gasket.

I have never tried it, but one could use the engine oil pan washers on the trans oil pan to spread the load.

After I rebuilt my engine I had no leaks for 5-6 years, but now the drips have started.

[btoran]

you guys are using olive oil, right? if not, the car is telling you to.

[TX82FIAT]

I did not see any dimples or rises in the pan when I looked it over and placed it on a flat surface. However, that is not to say that there were not any. Just that I did not see them. I think I'll live with the drip for a while since I just filled it up with GL1. I'll save the $4.00 in serated flange nuts for the next oil change. I did use the type 3 aviation sealer and like that stuf a lot for part assembly.