Ron3rd
Aug 17, 2020Explorer III
GEAR LUBE LEVEL QUESTION, 2016 CTD 2500
I'm going to be changing the gear lube soon in my diff and had a question about the fill level.  There is a line on the diff that indicates the proper fill level.  As I recall, the specification says it can be +/- 1/4" from the line.  The line is a 1/4" from the bottom of the fill hole.  Does this mean you can fill up to the hole till it runs out like in the olden days?