Go Back  MY350Z.COM - Nissan 350Z and 370Z Forum Discussion > 350Z Tech Area > Maintenance & Repair
Reload this Page >

Oil Change, MTF Change, and Rear Diff. Fluid Change = Noticeable Difference

Notices
Maintenance & Repair 350Z up keep and diagnosing/fixing problems

Oil Change, MTF Change, and Rear Diff. Fluid Change = Noticeable Difference

Old 01-21-2014, 03:11 PM
  #1  
allshownogo
Registered User
Thread Starter
 
Join Date: Jul 2011
Location: tampa
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default Oil Change, MTF Change, and Rear Diff. Fluid Change = Noticeable Difference

2007 350Z Base Manual @ 61k miles

I changed my mtf and rear differential fluid around 59k and just yesterday changed my oil at 61k. (I change my oil every 4k with castrol syntec blend.) I must say, I feel a huge difference when driving. Granted, I don't beat my on my car. In fact, when I changed out my rear diff. fluid, the fluid was still a dark honey color, as opposed to the "black sludge" most people have reported when changing it out. As I have stated in other threads before, I'm too chickensh*t to try my car and I have no shame on being upfront with that. I love my car and I don't want to risk losing it over an adrenaline rush.

Big thanks to Monsta for providing clear DIY instructions! Getting the car up on rhino ramps and to a even level was the hardest part. Since my Z would not drive up the ramps, i raised every corner and slid the ramps underneath the wheels and lowered. (I saw the method of placing 2x4's in front of the ramps, but I don't really trust the strength of wood vs heavy metal.) Once the car was raised evenly, took me about 45 minutes to do everything.

My question is:

On previous cars I've owned, I never really noticed a huge difference in driving after an oil change. Granted I did recently change the MFT and RDF recently, but is it normal to feel a HUGE difference after an oil change?

Last edited by allshownogo; 01-21-2014 at 03:13 PM.
allshownogo is offline  
Old 01-21-2014, 03:19 PM
  #2  
KornerCarver
Registered User
iTrader: (2)
 
KornerCarver's Avatar
 
Join Date: Jun 2003
Location: Republic, MO
Posts: 3,342
Received 106 Likes on 46 Posts
Default

I just changed my oil on Saturday and I notice no difference at all. It just drives the same as it did and oil pressure is unchanged.
KornerCarver is offline  
Old 01-21-2014, 03:22 PM
  #3  
oldschool350z
Registered User
iTrader: (1)
 
Join Date: May 2012
Location: NY
Posts: 2,514
Likes: 0
Received 9 Likes on 9 Posts
Default

Hmmm idk it could be a placebo effect. Where you really think there is a vast change, but really it's minimal.
oldschool350z is offline  
Old 01-21-2014, 05:20 PM
  #4  
SQuaLZ
Registered User
 
Join Date: Jul 2009
Location: New York
Posts: 3,382
Received 114 Likes on 89 Posts
Default

What kind of MTF and diff fluid did you use? Also what did it have in it?
SQuaLZ is offline  
Old 01-21-2014, 06:44 PM
  #5  
samsniss350z
Registered User
 
samsniss350z's Avatar
 
Join Date: Sep 2012
Location: planet earth
Posts: 1,490
Received 23 Likes on 23 Posts
Default Oil change

Originally Posted by oldschool350z View Post
Hmmm idk it could be a placebo effect. Where you really think there is a vast change, but really it's minimal.
I too think its a placebo effect as I could swear things feel a lot smoother and freer but I'm probably wrong. I suppose the only time you could feasibly notice a change would be if the oil had not been changed for years and years and you then replaced it with a high quality oil, I think perhaps you'd notice things being a bit smoother.
samsniss350z is offline  
Old 01-21-2014, 07:18 PM
  #6  
Italianjoe1
Registered User
iTrader: (6)
 
Join Date: Dec 2008
Location: Miami, FL
Posts: 1,596
Likes: 0
Received 4 Likes on 3 Posts
Default

If you don't push the car, what's this huge difference you feel?
Italianjoe1 is offline  
Old 01-21-2014, 09:53 PM
  #7  
winchman
Registered User
 
Join Date: Sep 2009
Location: Georgia
Posts: 2,335
Likes: 0
Received 4 Likes on 4 Posts
Default

He probably got some oil on the accelerator pedal.
winchman is offline  
Old 01-22-2014, 01:09 AM
  #8  
myfirstzcar
Registered User
 
Join Date: Jan 2010
Location: western New York
Posts: 611
Received 0 Likes on 0 Posts
Default

Changing the mt fluid can result in smoother shifting, but changing the engine oil won't....unless it had 20,000 miles on it.
myfirstzcar is offline  
Old 01-22-2014, 08:55 AM
  #9  
allshownogo
Registered User
Thread Starter
 
Join Date: Jul 2011
Location: tampa
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by SQuaLZ View Post
What kind of MTF and diff fluid did you use? Also what did it have in it?
got both from nissan. although they gave me genuine nissan mtf, they told me that nissan direct sends them pennzoil for the rear diff. i've called around diffrerent nissan dealerships and they've all said pennzoil as well.

and im gonna assume that the fluids were never changed out before, as i bought her with 16k miles on it.

Originally Posted by Italianjoe1 View Post
If you don't push the car, what's this huge difference you feel?
i don't push it in the sense that i don't drive my car the way it was meant to driven (i.e. i baby my car), but i do have fun with it occasionally and comparing pre-fluid change and post-fluid change, there seemed to be a difference.

btw, whether you drive hard or like a granny, if there is a difference, you would be able to tell.

Originally Posted by winchman View Post
He probably got some oil on the accelerator pedal.
and what does that have to do with anything? if there was any oil on the pedal, it would make it slippery, but i would still have control as far as how much or little i push the pedal down....

Last edited by allshownogo; 01-22-2014 at 09:25 AM.
allshownogo is offline  
Old 01-22-2014, 05:22 PM
  #10  
oldschool350z
Registered User
iTrader: (1)
 
Join Date: May 2012
Location: NY
Posts: 2,514
Likes: 0
Received 9 Likes on 9 Posts
Default

How many quarts did you need for the rear diff? I have yet to change mine and I'm at 51,000 miles.
oldschool350z is offline  
Old 01-22-2014, 05:41 PM
  #11  
350zchad
Registered User
iTrader: (1)
 
350zchad's Avatar
 
Join Date: Feb 2010
Location: Indianapolis
Posts: 1,294
Received 63 Likes on 46 Posts
Default

just over 1qt buy 2, gl5
350zchad is offline  
Old 01-22-2014, 05:49 PM
  #12  
taywan
Registered User
iTrader: (53)
 
Join Date: Mar 2011
Location: G'ville SC
Posts: 4,734
Received 2 Likes on 2 Posts
Default

Only thing I "felt" a diff difference in was the mtf w the smoother shifting on 1-2-3 gears, others didn't make a diff at all

And I got GL-5 mtf from nissan. Didn't state anything about Pennzoil. Rear I used amsoil
taywan is offline  
Old 01-23-2014, 01:30 PM
  #13  
allshownogo
Registered User
Thread Starter
 
Join Date: Jul 2011
Location: tampa
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by oldschool350z View Post
How many quarts did you need for the rear diff? I have yet to change mine and I'm at 51,000 miles.
just over a qt. i kept filling until it started dripping out of the fill hole. once it started dripping out, i waited until it stopped dripping and plugged.

just make sure you get the correct grade and weight, as well as the car being leveled when you do change it. really easy process man and cheap insurance.

Originally Posted by taywan View Post
Only thing I "felt" a diff difference in was the mtf w the smoother shifting on 1-2-3 gears, others didn't make a diff at all

And I got GL-5 mtf from nissan. Didn't state anything about Pennzoil. Rear I used amsoil
gear shifting for me was the same, pre- and post-fluid change.

and yes, i did get nissan mtf, but for rear diff fluid it was pennzoil. did you get amsoil via nissan or somewhere else?
allshownogo is offline  
Old 01-23-2014, 03:58 PM
  #14  
taywan
Registered User
iTrader: (53)
 
Join Date: Mar 2011
Location: G'ville SC
Posts: 4,734
Received 2 Likes on 2 Posts
Default

Have couple friends at Nissan for the MTF. Rear diff was from a local amsoil dealer.
taywan is offline  
Old 01-23-2014, 05:06 PM
  #15  
myfirstzcar
Registered User
 
Join Date: Jan 2010
Location: western New York
Posts: 611
Received 0 Likes on 0 Posts
Default

I used redline in my trans, and it's smoother now than it was with the OEM stuff.
myfirstzcar is offline  
Old 01-28-2014, 05:05 PM
  #16  
striker27
Registered User
iTrader: (6)
 
Join Date: Sep 2006
Location: canada
Posts: 453
Likes: 0
Received 1 Like on 1 Post
Default

I think he is kidding about this..

This is a joke right???
striker27 is offline  
Old 01-29-2014, 01:02 AM
  #17  
myfirstzcar
Registered User
 
Join Date: Jan 2010
Location: western New York
Posts: 611
Received 0 Likes on 0 Posts
Default

^Not about the trans fluid.
myfirstzcar is offline  
Old 01-29-2014, 10:53 AM
  #18  
allshownogo
Registered User
Thread Starter
 
Join Date: Jul 2011
Location: tampa
Posts: 112
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by striker27 View Post
I think he is kidding about this..

This is a joke right???
are you asking if changing out the fluids makes the car run better is a joke?
allshownogo is offline  
Old 11-07-2018, 06:20 AM
  #19  
dkmura
General & DIY Moderator
MY350Z.COM
iTrader: (62)
 
dkmura's Avatar
 
Join Date: May 2002
Location: Aurora, Colorado
Posts: 6,867
Received 740 Likes on 507 Posts
Default

Redline MT85 is a synthetic GL-5 lubricant that has enough friction engineered in to allow syncros to function properly. Depending on how well a Z shifted when first purchased, a change to MT85 could result in a net gain in function.
dkmura is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SonnyWu
2003-2009 Nissan 350Z
52
11-24-2015 08:19 PM
bcoffee20
Zs & Gs For Sale
5
11-19-2015 06:39 PM
3vilbunny
Engine & Drivetrain
22
09-13-2015 12:31 PM
smithmt3
Maintenance & Repair
9
09-11-2015 08:25 PM


Thread Tools
Search this Thread
Quick Reply: Oil Change, MTF Change, and Rear Diff. Fluid Change = Noticeable Difference


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: