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Showing results for tags 'atf leak'.
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1999 Carrera Tiptronic oil pan leak and fix About six months ago I noticed the transmission pan was wet with ATF. Wrongly assuming the gasket was leaking, I changed the gasket and filler round seal and while I had the sump off changed the filter too. Torqued everything to spec and filled her up. Everything running smoothly. Three months later the transmission started to slip. Had a look underneath and the pan was wet again. Cleaned it up so it was totally dry. Took the car for a short run and left it overnight. Next day the pan was dry around the sides but wet between the drain plug and filler hole. Wanting to isolate the leak I dried the pan again and taped blotting paper around the drain plug and another around the filler hole. Took the car for a short run and left it overnight. Next day the drain plug paper was dry and the filler hole paper was wet but touching the inside of the filler hole I could not detect any fluid. To pinpoint the leak I cut a 50mm hole (size of filler hole) in the blotting paper and taped it around the filler hole. I then stuffed paper into the filler hole and taped that up making sure that the two pieces were not touching. Took the car for a short run and left it overnight. Next day the paper around the hole was wet and the paper in the hole was dry. Finally, I knew where the leak was coming from. Not wanting to spend over AU$1,000 on a new oil pan, I ran some JB Weld over the join between the filler hole and pan. (See photo) It has been 3 months since the fix and the pan is still dry. I have also applied 80 Nm of torque to open and close the filler hole plug and this has not cracked the JB Weld seal. I hope this info will help anyone with a similar leak. 1999 Carrera Tiptronic oil pan leak and fix.pdf