Before I send this in for repair can anyone guess as to what is causing the oil leak in my Cub Cadet gt3200? it drips from under the chasis. It's not the oil drain, which I had trouble with before and had replaced. It seems to be on the left side if you standing facing the front of the tractor. Sometimes it's a slow drip and we can just add a little oil and keep going. Other times, with a long mowing time, the oil tank is almost completely empty. I've attached some images. I'm no mechanic so I can't fix it but I'd like to know if I should just park it for now and have it fixed in the spring during the regular maintenance or if it's a significant problem so I can prepare for the cost of repairs.