I'm @ 125k so I'll probably run a full 12 quarts of Matic S through mine. Hopefully I'll remember to post back. I don't think I've done a change since 70k and when I did that I ran 6 quarts through it (drain and refill 4, **** 2 quarts through the return line and fill 2 more.)

 

So are you recommending using Nissan Matic S or some other manufacturer? What about some synthetic like Amsoil? I would assume using the factory stuff is best.

 

ugg, I hate it when manufactures do that, and don't let anyone fool you and say the fluid doesn't need to be changed, fluid breaks down. There still is a change interval.

 

So.... Do i have to fully flush atf oil for new or only replace half of oil to begin??

 

You need to re-read this entire thread. Your question has already been answered.

 

So you didnt use matic s or j? I thought it would mess up your tranny if you use different tranny oil that isnt oem

 

Hmmmmm... Interesting read... Subscribed...

 

For those that haven't already read the SERVICE BULLETIN [NPSB/07-027; #9376], id suggest doing so.

The Service Bulletin advices NOT to use AFTERMARKET FLUSHES on Nissan/Infiniti vehicles
but when they refer to AFTERMARKET FLUSHES they are talking about cleaning products
"Some aftermarket flush processes may leave residual solvent in the vehicle system which can reduce the effectiveness of the fresh lubricants and lead to possible damage"

So one does not need to fear having their transmission "flushed" with a fluid exchanging machine [which pretty much every trans flush machine is] that does not use cleaning agents. A fluid exchanging machine "flushes" the system by sucking out a predetermined amount of fluid from the transmission, then replaces that amount with fresh fluid, and does this same process over and over. Essentially there is never a complete drain and fill, so the fluid is never 100% new but its pretty close. Furthermore, this is basically the same thing that others are doing by draining the transmission pan, refilling, then redoing the process at the next 2-3 oil changes....its just faster

And for validity, I have done many transmission "flushes" on Nissans, Infinitis, Toyotas, etc. without one issue that had to do with the flush itself

 

Oh and I just got off the phone with a fellow mechanic friend at an Infiniti dealership and brought up the topic. I had asked how they change transmission fluid and he stated "Two ways! if its service, we just drain and fill, if its flush, we will flush it"

 

Did u do a flush or a drain and fill?

 

I wanted to drop the pan and change the filter. Anyone know the parts i need to do this? Also i wanted to do the cooler line flush. How do i know which is the cooler line?

Thanks

 

You might get more/better responses if you post a new topic and say which car you have. But you can find the factory service manuals over on the NICO club site. Look for the sticky at the top of the "G35 and G37 Engine, Drivetrain & Tuning" forum.

 

Agreed with Mudgen.

Look at and read the Factory Service Manual (FSM) for your year and model before attempting. Changed my AT fluid for the first time in a 2003 G35 sedan with 154k miles. No transmission issues prior to or after change. Did it for a project mainly and did it per FSM, mostly.


Where I deviated from 2003 sedan FSM: While completing the second part per the FSM, I drained 2 qts at a time from ATF out line coming from radiator. Then filling 2 qts. Repeated this procedure, 2 qts at a time, until fluid the fluid that was coming out was bright red. (FSM calls to do this procedure of filling and emptying simultaneously and I was short handed). Used about 12 quarts of new matic-s fluid total (slightly less than recommended in FSM). On the last round of 2 quarts out and in...I stopped at 1 1/2 quarts to save half a bottle of fluid to fine tune the final fill.

Used 3/4 clear tubing from home depot to attach to ATF radiator out line, 3.5 bucks. Also used a catch pan from walmart with quart measurements on it, 3.5 bucks. Original fluid was dark, but did not appear burnt or to have any strong or distinct smell.

Got Matic-S, since it supersedes Matic-J, from local nissan dealer: 10.99 QT...pricey, but cheaper than ordering online with shipping. The parts guy didn't understand why I was using so much, and indicated that they typical only do drain and fills~6qts--as NOT per this FSM.


Resources:

http://www.nicoclub.com/archives/use...-database.html

and:

http://x.infinitihelp.com/forum/show...ice-5078.html?

 

Nicely done Daved! question though, when your under car, which side of the car is the "cooler return, or outlet" line from radiator? Pass, side, or driver side?? I plan on servicing my cars tranny very soon, I was gonna do what I always do, run motor, and let the car pump out the fluid itself, while I simultaneously add matic s through fill pipe, ( obviously with a couple of stop, restarts to catch up. So, imo, when you have beautiful matic s running out return ( to tranny line) your done. I am just not sure with side of car is the >return< line.... regards....

 

Triton3.5, for the G35 AT, the driver side is the "cooler" return side. The incoming "hot", is the passenger. For the G35, it took about 10 qts to start seeing bright red for me. Best.