How to add differential gear oil?

Tiny
MATTHEW SCALLORN
  • MEMBER
  • 2011 LINCOLN MKS
  • 3.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 121,000 MILES
My car is leaking differential gear oil through I think a failed driveshaft/CV seal where it connects to the differential.
I attached a photo which I believe is the "Drain" plug but am unsure, any help would be appreciated before I destroy my differential until I can get it into the shop.
Monday, April 12th, 2021 AT 5:51 PM

2 Replies

Tiny
MATTHEW SCALLORN
  • MEMBER
  • 2 POSTS
Here's the picture of the plug I think is the for the drain.
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Monday, April 12th, 2021 AT 5:51 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,334 POSTS
Hi,

That looks like an inspection plate. Is that where the leak is being noticed?

As far as the drain, it is an actual plug not a plastic cover. If you look at the pic I attached below, I highlighted the drain plug and circled what you have in your pic.

Also, this vehicle shouldn't have differential fluid. Everything is part of the transaxle. Is the fluid you see red in color?

Let me know.

Joe

See pic below.
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Tuesday, April 13th, 2021 AT 7:33 PM

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