Hello everyone, was under my car today replacing an O2 Sensor and realized I had some red atf leaking from somewhere, didn't take long to realize where it was coming from and I snapped a couple pictures of the rear of the trans. The fluid is not actually leaking from the seal but where the driveshaft itself goes in. I was planning on changing the fluid in it and replacing the driveshaft as well since it has a pretty large dent in it from the previous owner. I have an aluminum driveshaft from a friend. To get to the point, what must I do to remedy this leak? Also my car is a 97' so I know there are certain types of synthetics I shouldn't use, any recommendations on ATF Fluid?

Thanks, Grant

 

Sorry just realized this post probably fits alot better in the powertrain section, please move if you feel so

 

The rear seal is about $25. AC Delco part 12530278. I just had mine out with out pulling the tail shaft housing. I found it easier to pull the seal after cutting the lip off the original seal, then used a seal pry. Be careful not to knick the aluminum. I did not have a socket big enough to drive the new seal in, but was able to get it in using very light hits and a 1/4” extension.

 

Post is fine right where it is.