I have only had 1954 3100.
The larger truck pans might be different.
Maybe someone will check a Master Parts Catalog?
“Is your little tube cover attached to the dipstick or does the cover freely slide up and down the dipstick shaft?”
I think there is a bend/tab in the stick, that keeps the “cover” from moving up/down.
“Does your dipstick bottom out in the pan? With the dipstick bottomed in the pan, 5 quarts oil looks to be a qt too full.”
No
“Could measure how far the stick’s notch drops into the tube when the stick is bottomed out and how far the notch goes into the tube,”
I’ll try to remember to do this tomorrow.
