Sorry to bump this thread, but how often do we need to change the transfer case oil? According to the evomoto's guide to change the transfer case oil it's 15K for heavy use or 30K for normal use (http://www.evomoto.com/tech_info.php?tPath=2&tech_id=25). However according to the Mitsu Diaqueen product description on the lancer shop (http://www.lancershop.com/customer/p...&cat=15&page=1) the recommended interval is 5K - 7.5K mile. That is a pretty big difference between the numbers. Which one is correct?

I am interested to know this because I am thinking of getting a used evo with somewhere around 18K miles and the owner said that he has never changed the t-case oil yet.

Thanks.

 

Its because its much easier to tell you noobs to use diaqueen than tell you all the things to look for in the million other gear oils out there.

if you don't have the extra 25 bucks, take a chance. this is the internet, not the end-all be-all. you are dealing with 20000 people who know as much or less than you for the most part.

ill tell you this, the MITSU dealer put the BG stuff in my tranny AND t-case when they did the TSB on my gears. t-case was SHOT in 500 miles. not quite apples to apples, but you see the kind of fire you are playing with.

 

how much royal purple maxgear 75x90 do you need to do a t/c and diiffs on the evo

 

or is it maxgear 90(straight 90)

 

Diagueen dude.

 

Mostro: If it was me and I was buying used.....First thing I would do is change all the fluids and filters. Also, you can cut open the oil filter with a hacksaw and see if there are any gremlins inside, too.

 

Here is what Tuning Technologies put in my car. Diaqueen in the TC, BG Synchroshift in the tranny and Redline in the rear LSD. The only complaint I have is with the BG (unlike many who have god things to say about it). I am underwhelmed with it and my MR tranny. I may try Amsoil Gl-4 next.

 

I take it that the right number is the 15K/30K for the transfer case then... although I have seen people say they change their t-case fluid every other oil change.

Thanks for the advise sparky. Yeah, I'd probably replace all the fluids soon if the deals comes through. I did ask the seller if there is any whine/noise coming from the t-case or differentials and he said there was none, so...

 

2qts total between the two. I did the tranny as well and it takes 2.3qts +/- .25, the TC takes a little over 1/2qt and the rear diff takes almost a full qt.

 

To piggy back on this - I do it all as well....when sparky says all fluids I'm sure he means to include clutch, and brake, coolant, etc with all the filters including fuel, etc. Doing an entire tune up (spark plaugs, air filter, etc) helps give you piece of mind, a starting point from which you know where everything has started to then know your own change intervals and a fresh car to boot.

 

thanks for the reply. is it maxgear 90 (straight90) or maxgear 75x90)

 

yeah i changed my oil after a couple hundred miles after i got it used and it was completly black, so i changed everything else too. looked like they didnt even do any thing but give it a half a$$ wax job and vacumm the carpet. i was pissed

 

Since this one is my daily driver I use maxgear 75x90. When I begin to track the car I'll be switching to 90.

 

Use whatever you want, just send it here after you've F%^#ed it up.


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