I've have an old Coast to Coast front tine rototiller. Old but runs like a champ. I'm in the process of replacing the front tine gear oil with 80W-90. This tiller has a small bolt up high which I know is the overfill hole. My question is that down low on the housing there's two bolts. I expected one drain bolt but there's actually two. I unscrewed both and drained the oil out both holes. When I refill the oil through the overfill hole, does that oil fill up both sides? Why are there two drain holes but only 1 filler hole? Does oil going in the one overfill filler hole split and go to both parts of the housing with drain holes? I just want to make sure I'm filling it back up properly. It took just shy of 1qt of 80W-90 before oil came out the overfill hole. I hope the pics show what I'm talking about as it's hard to describe. Thank you.
