My brother and I have been corresponding about a leak from my C4 transmission. It's manifesting itself by a small leak from a crossmember about 9 inches behind the transmission pan and off to the left (drivers side) of it.

The car sat for a few years. Car was parked on Sunday evening and I wiped up about a quarter size spot of pink, transmission fluid on the concrete floor yesterday. Same size spot was back this morning. The dipstick registers full.

My brother says it looks like the pan has RTV on it. I'll get it on ramps and check the bolts. My suspicion is a leak from the converter - either front pump or drain plug.

Looking for other ideas to check as well. Transmission operates and shifts fine.

You can see the spot on the exhaust pipe where it's coming off the crossmember.



From the left side: