Posted by Bish on September 22, 04 at 14:51:31:
In Reply to: Should I drain differential after adding dino oil to the synthetic? posted by Louie65 on September 22, 04 at 12:48:56:
I would worry more about overfilling than a little dino in there unless you tow frequently in which case I'd drain and refill. If you overfill, the rear seal can start leaking after a while.
To check, I use an "L" shaped hex key to measure.
Bish
2001 Tahoe LT