Leaky Rear Seal.

[Mudeblue]

My real seal on my 66 GTO decided to start leaking. Before trying to replace, I was reading an additive like Blue Devil or Barr’s might do the trick. The car sat under raps in a climate contrived building for 2-3 years before I bought it. Does anyone have any experience with this type of product?

 

[Big_John]

Not gonna work.... Probably do more damage than good.

 

[CBODY67]

Once a rope seal rear main seal starts to seep, nothing to seek to expand with chemical or whatever. Might investigate the possibility of upgrading to a lip seal (as can be dome on Buick V-8s).

As the car sat unused for a good while, might see if it'll dry up with use? Ensure that the crankcase vent system is working, too.

Enjoy!
CBODY67

 

[detmatt]

If you ask me a rope seal is superior to a lip seal.

 

[65sporty]

We had a 73 Dart in the shop with a leaking rear main, one of the other guy's replaced it with a new fel-pro seal and it still leaked. The boss put in a rope seal and the leak is gone

 

[WOT440]

I had sucess with a front pump seal, that was leaking in a rebuilt 727 transmission, on my 68 Chrysler, after not being on the road for a year. I tried the Blue Devil trans seal. At first nothing, but over a three, week period, running the vehicle each day, the leak was less and less. Now two months later, it does not leak a drop. Obviously, each situation is unique, and a new seal would be the ultimate repair. Just thought I would share my experience.

 

[68PK21 440.6bbl]

Guy that sold me my first PK21 told me that if you put just one (1) cap of brake fluid in a leaking automatic transmission it will soften up the seals and swell them to stop a seal leak. This was from someone (a plumber) that replaced the noisy throw-out bearing in his K5 Blazer (cheap) without doing the clutch plate only to have the clutch slip months later (plow vehicle).

"He who is the cheapest usually ends up spending the most"
Click & Clack.


.

 

[Mudeblue]

I had sucess with a front pump seal, that was leaking in a rebuilt 727 transmission, on my 68 Chrysler, after not being on the road for a year. I tried the Blue Devil trans seal. At first nothing, but over a three, week period, running the vehicle each day, the leak was less and less. Now two months later, it does not leak a drop. Obviously, each situation is unique, and a new seal would be the ultimate repair. Just thought I would share my experience.

Thanks.