ATF/Diif fluid flush combo?

[ChiTDI]

Panic just set in as I realized I have drained & refilled my trans every 15k, but have never changed the differential fluid. 95k miles.
I'll check carefully tomorow for separate drain/refill plugs. I did have the trans flushed at 70k. If the units are not separate, does the "flushing" of the trans exchange any of the differential fluid?
Yikes.

[ChiTDI]

Separate units for sure. Found the drain plug, where's the fill?

[toyomoho]

The typically places for the fill point would be on the back, top or side of diff housing. There might boss on the trans where the filler port would have been but it was not machined out. However, this trans typically has just one fill point the same as the trans.

[ChiTDI]

Originally Posted by toyomoho

The typically places for the fill point would be on the back, top or side of diff housing. There might boss on the trans where the filler port would have been but it was not machined out. However, this trans typically has just one fill point the same as the trans.

IF there is no fill plug, (I'll surely go over it with a magnifying glass) how does the unit fill?
I didn't spend a lot of time when I was looking, it was -4 , getting dark, and the Packer/Giants game was comin soon. So...

One poster on this site said to fill the trans and the overflow went to the dif through a tube or something. I might not have read that correctly, I was reading a ton and it was getting late. My BP was through the roof when I realized I may have neglected the service on this car.

Thanks for the help.

[shortrun]

ChiTDI
More of a question than an answer, sorry.
I have a 2000 Ava and have been doing the transmision fluid drain and refill every year, using only the tranny pan drain plug. I get about 3 quarts out.

I beleived the differential uses the same fluid. (I'm not so sure right now)
And that I could drain the differential using it's own plug and get another 2 quarts (aprox.) out.

Then refill everything using the transmision fill.

I too am wondering now, is this right or is this wrong?

[ChiTDI]

shortrun I think you are right. I went to the dealer and talked to a couple mechanics who said it could be with or without a fill plug. Service writer said they take different fluids. Mechanics rolled their eyes when he said that.
What I did get from them was to check carefully, locate a fill bolt (17mm) and open it, then open both drain plugs, close drain plugs and fill. Fill from the fill opening in the dif first (if there is one) otherwise fill both units from the trans dipstick tube.