If it says type F on it I run it and I race more than most. Mags, Walmart, whatever. I build my transmissions so I see what is going on. Ohhh and there isn’t a much harder test than a 6000 Stall converter on the floorboard with a transbrake.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time