Is There A Fill Line?

Finally broke down and bought some 75-90w oil to add to the shift turret. $3 a quart and if my figuring is right, that’s more than 900cc. The specs I found on Miata.net call for a complete fill to be just 90cc, so I’ll be able to fill it from empty 9 more times. I’m not sure how much I put in there and I’m not really sure where the fill to line is, but I’m thinking that the guy who fills the turret on the assembly line was picking a booger out of his nose when my car went by, because it sure seemed to take a lot of juice. I guess I’ll find out tomorrow morning if it squelches that little noise any.