For his transmission, there’s 6qts in the pan, however the fluid level with engine off is below the gasket so the qty doesn’t matter. The pan gasket is not holding any pressure while running either. It’s basically holding back the fluid dripping and flying around during operation. A gasket for an intake manifold actually would see much greater pressure differential than that of a th400 pan. And just to be clear, I’m not saying everyone should be frugal and use cardboard to fix their cars, I just think this guy deserves more credit than he’s getting in these comments. He’s replacing what experience tells me is probably a completely cracked and leaking gasket, with a gasket that will stop the uninhibited leak with the downside of slowly wicking fluid out. It’s not a permanent solution but a solution nonetheless.