I bought a 518 transmission out of a B350 van so I didn't take the dipstick due to it's length. I purchased one from a Ram truck and when I looked at the markings all I see is the add dot and the bottom edge of the OK X marks.
That will put the topped off line half way up the tube seal is that the correct area for the oil level on these.
If anyone has a trans apart right now and can measure how far the dipstick protrudes past the end of the tube that would be very helpful, I have to shorten the one I'm using in my car.
Thanks