This is a digital 3D model of a funnel used for putting transmission fluid into an engine. I actually 3D printed this model about three years ago, and used it a couple of times, but yesterday a clamp came loose from the transmission cooling radiator and all the fluid came out, so I had a chance to use this funnel again. The Transmission required 8.98 quarts of transmission fluid to fill the transmission on my Nissan Frontier truck. I acutally used this smaller funnel to put the transmission fluid in the transmission. As any of you who have put transmission fluid in your vehicle, know that usually, the fluid goes in the fluid stick opening, which has a small diameter.