We put the trans in, added the 10 quarts of fluid
and put the car on the road. BUT, we didn't calculate the capacity of the cooler into the needs of the system. I looked and looked on line but couldn't find the fluid capacity of the cooler, so I called B&M this morning. They said about 1 1/2 quart capacity for the cooler. The fluid weeps back into the sump when the car sits because the cooler is higher than the trans as are the lines. That would explain why at temp the fluid appears low and at cold, rest it shows high. Now here's the rub. As we discussed it, the tech rep said that we should try to keep the fluid level below max even at cold because overfill at cold will cause foaming in the fluid that will cause sloppy shifts. And, I'm having some sloppy shifts.

If this is the case, I still need to add fluid and lower the cooler. Noodle on this and let me know what you think.