i got one from BP petrolium. it leaks. not recommended.
Just our some cement in the top of it, that'll stop the leak.
Or maybe try a hacksaw...
Or stick a golf ball in there....
Well...just hook up a shop vac to it, that'll handle most of the leakage...
Hey wait...if you route the leakage onto your manifold, it'll just burn off and not bother anyone.