second tranny UOA this time with bypass

[deepsquat]

95 Nissan Altima fluid is Mobile 1 ATF
First ran a UOA in Aug of 2003 at around 80000 miles on the tranny ( had beed replaced in an accident) elevated copper levels were from a replaced radiator.
Approx 11,000 miles on this fluid ( a change dumps 4 quarts and there is around 10 in it)

second sample is from last month 120,000 miles on tranny. and a Frantz bypass filter running on it

20,000 on fluid.

code:

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Aluminum 11 10

chromium 0

iron 45 43

copper 119 77

lead 1 6

tin 1 4



boron 79 10

silicon 7 5

sodium 9 4

calcium 230 222

magnis 1 5

phos 284 251

zinc 41 41

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[Al]

For comparison purposes here are my numbers on a Nissan Sentra tranny. These trannies are very hard on oil. They shear down fluid big time. Even Mobil 1 doesn't hold up. I now do a drain (4 quarts about every 10 to 15 K miles or so). I think its good preventative maintenance.

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Miles..25,000....37,000.....47,858
Cu- 28......19.......33
Fe- 29......14.......15
Cr- 0.......0........0
Al- 11.......5........5
Pb- 3.......1...........2
Moly- 1.......0.......1
Phos- 623.....372......420
Zinc- 29.....18.......26
Mg- 1.......1.......1
Ca- 192.....248......326
Antifreeze 0......0.......0
Water 0.... .2..........0
Silicon 9......5.......6
Vis 5.32... 5.88......5.27

Analysis performed by Schaeffer

 

[Stinky Peterson]

What is the visosity of your new oil Al. 5+ cSt seems normal for a transmission fluid.

 

[Gurkha]

If you would like to see real life shearing, check out the oil that comes out at 5000 miles from my 69 Nissan Patrol with a HINO diesel, the tranny is ancient 3 speed and makes Mobil-1 thin like water and dark. The tranny had to be fixed three times due to this.

 

[deepsquat]

quote:

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Originally posted by Stinky Peterson:
What is the visosity of your new oil Al. 5+ cSt seems normal for a transmission fluid.

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44.5

sorry i lost this report in this new forum ...learn somthing new every day