No Transmission Wear?

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scdanny
Posts: 15
Joined: Wed Jul 24, 2002 1:28 am

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Two yrs. ago I changed the trans. filter @ 77,000 Mi. on my 97 J30. And refilled with conventional oil. There was a considerable amount of very fine wear particles in the pan at that time. Yesterday I changed the filter again with 105,000 Mi. on the odometer. The pan was virtually clean with only a slight indication of particles. Is this normal? I thought for sure there would be more wear!


Q45tech
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Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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77k vs 28k ......2/3 less.....did you weigh the particles each time [after seperating them with solvent]..........divide them into magnetic and non magnetic [clutch].

Actually the worst metal wear is in the first 5,000 miles as the gears wear in ................why the first engine oil change [3750] should be much much more.

Generally metal wear in a transmission is the least of your worries.

scdanny
Posts: 15
Joined: Wed Jul 24, 2002 1:28 am

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Q45, Thanks for the tip. I'll evaluate the wear by seperating the metal from the non-metallic in the future.

maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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scdanny wrote:Two yrs. ago I changed the trans. filter @ 77,000 Mi. on my 97 J30. And refilled with conventional oil.
I hope you meant conventional ATF!

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szh
Posts: 15932
Joined: Tue Jul 23, 2002 12:54 pm
Car: 2018 Tesla Model 3.

Unfortunately, no longer a Nissan or Infiniti, but continuing here at NICO!
Location: San Jose, CA

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Q45tech wrote:Actually the worst metal wear is in the first 5,000 miles as the gears wear in ................why the first engine oil change [3750] should be much much more.


Dennis, can you elaborate further? I asked about a related issue (i.e., what fluids I should change early in my M45) in this post:

http://www.nissaninfiniticlub....39870

but did not see a response from you on the topic.

Thanks!

Z

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PalmerWMD
Posts: 14329
Joined: Mon Apr 29, 2002 3:14 pm
Car: 2004 350Z

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When Dennis doesnt respond to a post like that it usually means he doesnt disagree with the one who was answering.Right?

Fred...;)

Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

From what I've seen changing every fluid [except maybe the AC oil] prior to 5,000 miles [90 days] sure would help as the antiwear additives are surely being used up in the initial wear.

I'm not one to waste money, but it would be nice to get all those tiny metal particles out quick, then settle in on annual changes, or at least sample the fluids for changes in color, and react accordingly.

You never know when buying a new car if your or your family end up keeping it for 10-13 years..........always too late to retroactively do things which might have made a difference.

It still scares me that manufactuers talk about lifetime fills when they only offer 4/60 or 6/70k warranties on things.........now if they offered 150k I might believe things lasted to 150k.


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