Depends on the converter and application.
If you are like me and have an 8" being used in an application that really should be a 9" it made no difference. You can only compress a fluid so far and lock a converter up so tight.
What converter do you have and how much Hp are you trying to put thru it?
i have a few different converters. 9 " coan, 9" protorque and 9" PTC. I heard using this fluid instead of atf -f fluid will tighten the converter up(lower stall speed) and lower the slippage at the other end. Really wanted some results if anyone else has tried this and if it did lower the stall. I have one converter i think stalled about 300-400 rpm too high and wanted to see if this would help. the lock up is fine at the other end. let me know what you guys think.