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DIY: Changing manual transmission oil

Old 05-25-2018, 06:15 PM
  #151  
Poncher
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Originally Posted by Jsolo View Post
MT has brass components (synchro's). GL5 is harsh towards such metals. Refer to your owners manual/fsm for correct fluids to use.



I used this the last few times.

https://www.amazon.com/Red-Line-5050.../dp/B004D4URV6
I see now. I was unaware of that. I was planning to do the fluid change this weekend since I was going to have a lot of free time. Well, time to return and get Redline.
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Old 05-25-2018, 11:48 PM
  #152  
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Motul or go home
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Old 07-09-2018, 12:00 PM
  #153  
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^^You're in the wrong thread - review this https://www.myg37.com/forums/d-i-y-i...-gear-oil.html

And yes, for your region (pacific NW) 75w140 would be too thick IMO.
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Old 03-12-2019, 09:25 PM
  #154  
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Read the entire thread and looks like MT85 is the way to go? I live in San Diego and don't see a lot of cold here. I have an amsoil membership that is expiring soon and would like to use it if possible for the MT fluid. Also, the 09 vert FSM calls out for 3 quarts. What's the extra 4 oz for?
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Old 03-12-2019, 09:46 PM
  #155  
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On a level surface I've always filled it til it starts over flowing... Wait until stops, then reinstall the plug. It did take a bit more than 3 iirc.
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Old 03-13-2019, 01:52 PM
  #156  
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You guys think Amsoil would be fine if the coldest it gets is mid 40s?
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Old 06-19-2019, 05:31 PM
  #157  
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Just changed my MT oil. I used Redline MTF and IMO the car seems to shift smoother. I used the Harbor Freight syphone pump. Worked great, no runs, drips or errors. I had 32K on the Nissan MTF oil. Definitely needed changing..
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Old 06-19-2019, 11:37 PM
  #158  
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^^Funnel and hose works just as well with less effort. Used this both for the diff and trans last time. Best to do both on a hot day (fluid flows more easily).

Last edited by Jsolo; 06-20-2019 at 11:25 AM.
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Old 06-20-2019, 05:40 AM
  #159  
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Thanks, I'll have to remember that. Didn't consider gravity filling it from the top.
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