my 98 has a tc drain plug. It's not hard to check if you have one or not. Drain the tc if you can other wise its a waste of time and money in my opinion.
98 scab 4.6 4x4, gotts mod, straight piped, custom bumper, rock sliders, aussie locked rear, welded front, 285/70/17s goodyear territories, rust and dents
D60/10.5 swap, bobbed, wb shortened and flat deck in progress.