I'm close to finishing the auto to manual tranny conversion on my 71 240Z. It's a 5 speed out of a 78 280Z. Since I bought the transmission at a junk yard with no way of knowing it's condition, I took it  to a reputable transmission shop to get it looked at before I put it in. They replaced one bearing and said everything else is good. So, do I fill it with whatever is originally recommened, or have any of you had better luck with anything else. I live in Iowa, so it only gets driven in warm wea