Just completed a swap from dynaflow to a ‘66 st400 with st300 converter in my 1960 LeSabre. How much fluid should I expect to use? All I’ve managed is about 8 quarts. Only 2.5 went in (prior to start up) before it was backed up in the tube and slowly drained out the base and on the shop floor. So maybe 2qts in total? Thats it? Then ran car slowly adding 4qts and put through all gears standing still. OK feeling better - trans guy said typically 10 to 12 qts in the system. So add another 2. Trying for a third and again fluid all over! So 8 is it? Trans guy said stock pan is quite shallow. Does only 8 qts seem right?