I'd like to change the transmission fluid on my older Bunton. As you can see, it's a Bobcat 38008 trans. I don't have a manual (can't locate one anywhere) so any help would be appreciated. I take it the two square bolts need to be removed to drain out the old fluid? Where does the new fluid go? What's a good replacement fluid, 90 weight gear oil? How much? Just a note on the pics. There's a minor leak on the right side. All the fluid you see on the trans came out when I tilted the front end way up to clean off the deck.