This morning I had transmission fluid running out from under the car. The 350 turbo has had a few drips from the pan which I have been unable to stop despite replacing the pan with Mr. Gasket pan. This is different!The car has not moved in more than a month; in fact, it hasn’t even been started. I understand a seal breaking if it had been running but I don’t know how I could get that much out of it when noting has been moving.I have a spare 350 and torque converter I plan to put in but I cannot do it right now. I haven’t crawled under it to look since I am in the middle of other work. I just threw oil dry at it but I would like to know if any of you have ever seen this and why it did it. Milt
cars that have NOT had the engine run in a few weeks will have the torque converter drain back into the transmission.. this volume of oil will overfill the transmission case and come out the vent tube ...what goes on is the opening is half way up the torque converter... when the input shaft bushing clearance is increased the oil can seep back into the pan..faster and faster...there is not a lot that can be done to prevent this.. other than making sure the input shaft bushings are replaced when the transmission is rebuilt.. and it will still leak down eventually..you can invest.. in one of the fluid extractors fromMityvac/1.9 gal. fluid evacuator Part Number: MIT7400when you are going to have the car parked for a while.. evacuate a quart or two of fluid.. you could also get one of the large metal drip pans... smooth a layer of kitty litter on it and position it under the car.. as for sealing dripping transmission drain pans... i have a secret... transmission parts suppliers.. sell flat transmission pan gaskets for 2 to 5 bucks.. they buy them in bulk.. but they may also have.. 2 packages of torque flight 727 or C4 ford front pump bolt gaskets. these are just the right size and material to prevent bolt leaks from the front pumps.. and they work on the pan bolts just great.. be sure to check a few more places..the oil filler tube Oring... these have been known to leak when the engine is shut off..the kick down cable o-ring or seal.. but i have also found my share of separated or broken kick down cable casings... so when the transmission sits for a week or so.. the fluid level fills the case to a high enough level that it pours out the lowest opening.. the broken kick down cable..
Only thing I can add is if you have jacked the body up and down, and let the rear differential hang this would have caused the drive shaft to slide back and forth in the rear seal. Maybe the seal is old and brittle?
Poncho huggen gear snatchen posi piro.
Thanks! since the car will sit 9 months out of a year (nine winter, one month Spring, One Summer, etc.) I will have to start it once in a while; or drain some of the fluid; or put a 5 speed in it. I will probably end up draining some of it...
Milt, I'm hoping that the Mr.Gasket pan is not a chrome plated one. I've never been able to prevent leaks in them. The cork gasket and a thin layer of Permitex 2 on each side did it for me on a non-chrome pan, but it's virtually impossible to seal out leaks without sanding (I feel bad using that word with what you've been through with the paint), but brazing the slick plated pan surface.