[daveymc29]

British Motors told me to use Castrol 20/50 in my Austin Healey's, so that was what I used in my Model A also. I no longer have the car, but when I last checked it was happily driving around Yerrington Nevada where it has been for several years. Never had one leak that I know of, but they ran off the tranny oil in the A/H and those always leaked a bit.