Question about Hydraulic Fluid sight glass ports?

[Rmd8136]

At James River dealer today looking at the PTO casings on a 5055E and 5065D. The 5065D had 2 sight glass ports so you can tell if you are full or need to add fluid. The 5055E (MFWD) did not have them? I know JD has not been taking orders on 2013 MFWD in the lower 5000 series (less than 83 hp) yet but you can order the 2WD models. I am thinking the 5065D (2WD) must be a 2013 and it is a new feature? Anyone know for sure?

 

[deere5105]

Not familiar with a 5065D option. Thought the "D" only were available for 5045 and 5055? I had a 5105 that had the sight glasses for viewing hydraulic oil level. My 2008 5303 has the dipstick like the "E" series have figure the dipstick is the latest and the sight glasses are a carry over from the older units.