TwinTurbo.NET: Nissan 300ZX forum - I just put in this new oil.
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Subject I just put in this new oil.
     
Posted by JMartz on August 16, 2023 at 7:07 AM
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In Reply To I saw from your post below that you're using MT-90 posted by Polishzx on August 15, 2023 at 08:31 PM
     
Message The trans felt awful (in shfting) with the oil it came with. Can't remember if I could hear noise with that factory filled oil. The car only gets used sparingly. After 200 or so miles, I replaced the original oil with Mobil 1 75w90. After learning the trans calls for a GL-4 oil, I refilled it with MT=90. This oil is appreciably thinner than Mobil 1. Now I can hear the noise well, which gets louder when coasting and the motor is quiet and the transmission is being driven by the car's momentum.

The issue is minor at this time, but with all the chatter on this and oher sites regarding the input bearing, I'm emotionally preparing for a trans pull. I just spent several weeks correcting interior noises that drove me insame.

     
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