Jump to content
View in the app

A better way to browse. Learn more.
300ZX Owners Club

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

75/90 gear oil

Featured Replies

iirc gearbox and diff oil are different. Redline MT90 for the gearbox oil is a good choice as it can help with synchros that are getting a bit stiff on gear change.

 

Someone will be along that can help better mate.

  • Quote
    • Author

    I am getting a whining noise in 2nd and 4th, you have to listen carefully to hear it at the moment, 2nd is louder than 4th. How many miles does a gearbox usually last after a whining noise is first heard?

  • Quote

    Different oils for different jobs. Redline has a good reputation - MT-90 Gearbox Oil and 75W90 Differential Oil. Both are fully synthetic.

    Also make sure your gear leaver dust boot is fully seated. It can become detached and allow gearbox noise into the cabin usually in 2nd and 4th.

     

    Items 2 and 11 in diagram:

     

    http://nissan4u.com/parts/300zx/el_z32/1992_2/type_1/power_train/transmission_control_and_linkage/

     

    -Andrew

    Project 1547 - Out of the Blue

    She's so fine, there's no tellin' where the money went - Simply irresistible.

  • Quote
    • Author

    Cheers, I will check my boot later as I have just reinstalled my interior after having it out over the winter for welding work. I am currently waiting on three maindealers to get back to me with part numbers for the correct oil.

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
    Reply to this topic...
    https://www.300zx-owners.club/forums/topic/139621-7590-gear-oil/
    Go to topic listing

    Recently Browsing 0

    • No registered users viewing this page.

    Important Information

    Terms of Use

    I accept

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.