Noisy rebuilt Getrag

[RTRAM]

the oil analysis came back as follows:

iron 101

chromium 1

lead 16

copper 30

tin 0

aluminum 18

nickel 0

silver 0

silicon 30

boron 118

moly 12



The analysis states there is no abnormal wear



Are the metals high for a new transmission with 5,000 miles?

 

[RTRAM]

I have the MU90 Con O

 

[MMiller]

The analysis states there is no abnormal wear



Are the metals high for a new transmission with 5,000 miles?

Unless somebody has been doing regular samples on their Getrag, we won't know from the numbers. I'd listen to the first sentence in your quote above. I get sample analysis back from samples I take from customers equipment. Usually if anything is high, the sample sheet will point it out and recommend and oil/filter change, or recommend teardown, or out of service. Your's is stating that everything looks good for a manual transmission.



Your manual trans has no filter, just a magnet to catch the metals like iron and steel. Your oil is always going to have some metal and brass in it. A layer of "fuzz" on the magnet is normal on every gear case I've ever had apart that is not filter oil. I get concerned when there are flakes of iron, or large chunks that go thump in the drain pan. Also note that the synchros are brass, so you will always have brass in the oil sample, and will probably always see them floating in the oil you've drained. The longer the oil change intervals, the more garabage you will see.



Michael