727 transmission fluid question

what's his warranty? if you use your own oil, and you are installing yourself. Ask him why you can't use Dex3. To me there's no reason/config that requires $14@quart oil.

Good ole Dex3 works just fine on all of the performance clutches, whether, Borg, Raybestos or Alto.

Been using it for many many years on Diesel applications with more power, way more weight and never an issue.