Just curious how often you guys change your transfer case oil. I change mine at 15K intervals (half what the manual suggests) and the last change at 30K showed the used oil to be very dirty with silver dust flakes. It is dirtier than at the 15K interval. I DD my car and its stock. Lots of highway driving to and from work at around 65-80mph. I'm thinking of changing the TC oil every engine oil change (3K). What do you guys think? BTW I have used diaqueen on both changes.

 

 

30k should be fine for DD unless you also track them.

 

As well as the tranny, and rear diff, 15k here too.

 

I do 30k like the manual suggest. I almost ready for my second change. I haven't tracked my car yet (most likely this year). My TC is fine, no whining.
Personally I think if you use it for a DD with no HEAVY abuse 30K is all that necessary.

 

where do you guys dispose of your used oil? Does it get treated like engine oil disposal?

 

Yes

 

I change my TC, Rear Diff, and transmission all at the 30k specs and am having no problems at all.

 

I don't track the car (yet), but it does get it's daily fill of playtime. I figure 19k should be fine....somewhere between 15k and 30k it seems.

 

After my first one broke I did tranny, oil, and tc all together every 3k-ish miles. But I highly doubt it was necessary, first one broke because the dealer put the wrong fluid in it (haha, they tried to tell me that the right Diaqueen didn't exist since the old 90s Eclipses... Then I bought the same diaqueen from their parts department...). If you have metal shavings in it and its dirty at 15k, try it at 10k. Its like doing an oil change on all the newer cars that can go over 3k... Just keep checking the oil and when it starts getting low (if that happens before the normal schedule) get it changed.

 

the silver flakes are metal shavings

I think if you don't track the car 10-15k is perfectly fine

 

5k miles or every 3 autox's, which ever comes first

 

The manual says 30k for regular use, 15k for severe use. If you're not tracking it, 15k is fine.

 

Get a shovel, dig a hole....proceed to dump oil in the hole, fill the hole back in and get out of the neighbors yard in a hurry!


I do my fluids every 15k

 

^ hahaha i am planning on doing my tranny/tcase/rear differential at 15k miles...

anyone know how often to change the ACD fluid???