<VV> Leak! Leak! Leak!

[Darrin Hartzler]

I have been lurking a bit since I last asked for advice in July on 
trailering a 66' Monza convertible home from central Penn. to Bethesda, MD 
where I live.  With your advice and the hands-on help of Bill E. I was 
able to get the car home on a dolly by hanging a transaxle and towing it 
backwards (interestingly, subtracting the 150 miles of the tow from the 
odometer...did not know it was so easy to erase miles).

Well, over the summer I blasted and painted all the sheetmetal on the 
turbo engine I had sitting around and resealed everything and converted 
this auto trans Monza to a 4 speed TurboMonza.  All is well, the engine 
runs beautifully and the car is finally registered.

However, in honor of my upbringing, I had to screw at least one thing 
up...and here is where I need your advice.

I made the mistake of putting Amsoil synthetic gear lube in a 
trans/transaxle that had been sitting for several years (with nary a 
leak).  Because the old gear lube was still there, I assumed that it would 
hold synthetic oil just fine. 

Wrong.

I have expensive Amsoil all over my garage floor from a slow drip that 
seems to be coming from the edges of the yoke that holds the inner 
U-joints, though I have not put it up on jack stands yet to properly 
investigate.

Here are my questions:

1)  Has anybody else  had similar problems with synth gear lube on these 
transaxles?
2)  Is there any possibility that going back to dino gear lube will 
staunch the flow of fluid?
3)  Is there any complication involved in going from synth to dino in such 
a case as this (other than the challenge of getting all the synth fluid 
out of the trans and transaxle)?  Any tips on that as well?  I am assuming 
I can use some variation on a siphon for this.
4) Is there any chance that the seals that are leaking will magically make 
themselves whole by putting a few more miles on the current arrangement 
with the synth still there ( i.e. will they heat up/swell/rehydrate and 
seal)? 
...and, most importantly...
5)  Will they do so with dino gear lube or should I just go to plan B?

Plan B is to cut to the chase and pull the tranny and re-seal the sides. 

Of course, I will spend a couple of hours poking around this weekend to 
see exactly where the leak is and if it is just one side or both, but your 
experience and advice on this would be much appreciated.

Any help and/or experience much appreciated. 

Darrin

66' TurboMonza
65' TurboDonor
68' Camaro RS