Fluid leak stop products like Lucas etc?
 

My 72 K5 is stock, clean and runs good has a 350/350 auto tranny 104,000 miles.

It was sitting for somewhere between 2-5 years in a building with AC and heat.
The seller said 2 years but the inspection expired in 2011. He had hundreds of cars so I am sure the exact details were not sure to him I know I wouldn't know.

My mechanic said it had a few small leaks oil and tranny fluid but to drive it a few weeks get it hot etc and they might seal up. I know the mechanic really well they are really fair and very good people and mechanics. My question is I know there are stop leak products but assume they are bs or not good to use or they would have suggested to use them. Lucas tranny stop leak has good reviews but who knows if those are legit or not.

Just wondering opinions on this.

Thanks PG

Fix it the right way, do not use snake oil, it will cause more problems than it will fix in the long run.

1972 with 104K? I agree, don't risk it, might do more damage to the seals, fix it right!

Couldn't agree more. Drive it for awhile and park on some dry concrete or put some cardboard underneath to see if you have any leaks. If you do, fix them. If you don't, be happy!