anyone here check there OWN TRANNY OIL?

nabenson

You _could_ use the same oil in the manual transmission and the rear diff, but it's not recommended. They both use a fairly heavy auto gear oil, but in reality you need two different weights. One for the transmission, and one for the rear end. The weights are listed in the owner's manual, and I personally use redline oils in both.

11Thumper

nabenson

Sorry, I didn't mean to confuse anyone.

The MT (manual transmission) and the rear diff both use a "heavy" weight automotive gear oil. In a pinch (worst case!) you could use the same oil in both the transmission and the diff. HOWEVER, you should just use the oil weights as specified in the owner's manual.

I'm using Redline MT-85 in the transmission, and Redline 90w in the diff.

Trips

Hey Guys, Op's talking about the 7AT NOT the Manual 6sp or dif

Lets try to keep it on topic

Thanks

__________________

Z11

man.. im getting different answers everywhere, and i certainly dont trust the damn dealership.. but everyone is roughly saying to change it at "EVERY?" or once, 15K, 30K, 50K?? and im getting the same answers for the rear dif oil change, why couldnt the stupid dealership set a standard guideline to when to change it and leave it at that.. the stupid mechanic told me to come back in 6 months, salesperson says 2 months, nissan sends a letter in the 3rd month... like WTF.. ill stick to 6 months, for the maintenance im talking about.

seems like no one here services there cars at the dealership.. even if they bought the car used i would think they would still service it at the dealership since warranty is 5 years, and the car came out in 09

B&W_Evader

The way I read it...

7AT - 50k miles
6MT - 30k unless you track, then 15k
Diff - 30k unless you track, then 15k

__________________
|RIP|6spd-sport|OSG-LSD|XP8|RBF600|Eibach Sways|RE-71R|FI-34Row|Gen3-CAI|Yaw P.S.|

Z11

cool

CrunchyCajun

Mine is getting changed right now. Not just the AT fluid, the entire AT. Failed @51k of mostly highway miles. Wonder how fragile the transmission is, it is a $9k plus unit, thankfully warranty is covering mine.

11Thumper

What happened? You track the car ever?

CrunchyCajun

No track, mostly highway, something just gave up inside. Dealer does not know, Nissan had them replace fluid and then check it several times over 2 days to see if the noise went away, which it didn't. They told them to replace the unit.

CrunchyCajun

Picked it up yesterday, put 100 miles on it today, running great now. Paperwork said torque converter locked up, seems like something that can be fixed, but technician told me Nissan won't let them open up these transmissions anymore.

370fan

The 7AT transmission gets the fluid added through a plug that is on the pan. The fluid has to be pumped into the transmission. This of course requires a special tool. Once you have that tool, you can pump fluid into the trans and then let the car run until it's up to temperature. Once warm, you open the fill plug back up and let the fluid drain out until it slows to a steady drip. Then it's full. It has a tube inside the pan that sets the level. No need to check it unless you have a leak. No need to service it as it's designed to go over 150K without being changed.

bonfire

Just had my 7AT flushed today. Cost me $220 for a full flush, not just a drain and fill. All the talk about this not needing to be done till 100k miles, I almost just passed on it. I am glad I went ahead with it though. The car has 37k miles and the fluid was pretty dirty. No track use, just some spirited canyon runs on occasion. For me, it was worth the piece of mind. Now I know it is clean and it shifts a little smoother when moving between low gears.

...also, I was told that it is normal for the trans oil in 370 Z's to turn real dark after a few thousand miles. Not sure if that's true or not? But, mine is bright cherry red for now.

__________________
| 2010 MB 7AT Touring, Sport | Stillen Gen III CAI | H&R DRS 15/20 | SunTek CXP 20% | Hankook V12 evo | F.I. 18" CBE |

Z11

ya, better safe than sorry, so ill change it often