Leaking 904 Transmission.
I don’t know how much you want to save,,,,but this stuff is worth a try .
I’ve used it in newer model cars,,,and it truly works .
It cost about 12 dollars a can,,,,but it might help you .
I’ve used it and can vouch for its effectiveness .
I know it doesn’t state anything about helping seals,,,,but it also helps with those too .
I’ve used it in my automatic transmission and power steering.
It made the steering quit leaking at the rack,,,,,and the transmission shifts like new again.
The modern transmissions have many electric and pneumatic valves,,,,,man after about 10 miles I could tell a difference.
My daily is a 2000 model,,,with over 400,000 miles on it,,,,made all the difference in the world .
You might consider a can ?
Tommy