Blue Devil for oil leak

If your engine was leaking that much you would have a huge oil patch in your driveway. The engine probably burning the oil.

Thank you @F_O_R for your response. Its quite possible that the engine may be burning oil but leak is clearly visible when you see the underneath of the engine, though, as I said there are no drips. I do use 5W30 high mileage synthetic oil but on an average, 3qts oil is consumed/burnt/leaked in 1000 miles.

No drips means you are only losing small amounts of oil with the leaks. How many miles on the car and what oil are you using?

Though the car has 190K miles, it runs very strong and is in great condition with no other issues at all. I do use 5W30 high mileage synthetic oil but as said, its consumed within 1000 miles (on an average). So the leak is clearly visible but at the same time, the engine may be burning oil too. Again, as said, since the car is 20 years old, I dont want to spend too much $$$ and hence if there are any cheaper alternatives to fix the leak or the engine oil consumption, I will appreciate that.