Might work for a while. If the seal was hard and this stuff softened it up,
but then again it might attack rubber and if so every seal in the engine
could soon fail? That would likely total the car out.

I'll give you a $500 bucks for it .

I'll just fix the oil leak and sell it for , hmmm lets say

$4000 if it is in good condition

honestly, don't use Bar's leak. the stuff is sh.t !

either fix it or sell it. the car probably does not owe you a dime for all
the years of service it provided you, sound to me like you owe it to the car
to get it fixed and not put a dirty band aid on the problem

I have never heard of any real person claiming one of these cure-alls
work.  But on the other hand, I've never heard of any real person
claiming they made matters worse either.  Depending on how bad the
leak is, you've got only the price of Bar's Leak to loose.

And if the leak isn't too bad you might find it wise to consider the
economics of putting a pan under the car to catch the drips and
keeping close tab on the oil level before taking any drastic action.
Like paying big $$$ to a mechanic or getting rid of it for that reason
alone.

In contrast,  I have known a lot of real people who've fully enjoyed
cars for many years and miles with one or more leaky seals.  After
all, the car still drives the same and looks the same... only the
parking spot looks different!

BuddyWh