Manual Transmission Oil Analysis (43,000kms Factory Oil)

[Sinjo]

Sent a sample of my 43,000km factory gear box oil off for analysis and it read an abnormally high amount of Aluminum (49).

Estimated power to mileage:

- stock power from NEW - 15,000kms.
- Stage 2 E40 Stock turbo 15,000kms - 35,000kms. (Total 20,000kms)
- Upgraded turbo + Port injection: 747whp/900nm 35,000kms - 43,000kms. (Total 8,000kms)

Considering this is the very first trans fluid change, i am putting it down to 43,000kms on the oil it came off the boat with, break-in wear and any aluminum particles that have never been drained out.

I will note that the sample did see a very small amount of glitter, no chunks or metal or anything.

Gearbox behaves as normal, no popping in and out of gears, no grinding, no weird noises, maybe a little harder to shift when WOT but probably cause its loading much higher torque than stock now.

Will send another sample off in 10,000kms to see if the aluminum remains the same levels or increases, but I am expecting it to drop down substantially.

Just throwing this out there for any 6MT guys that are pushing higher than stock power and are curious as to what their gear box oil may look like, I am by no means a mechanic or an expert in the field of metallurgy lol.

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[lucky phil]

Aluminium = machining debris.
Phil

 

[Sinjo]

Aluminium = machining debris.
Phil

Are you implying that it's residual manufacturing debris since its the first ever oil change, or do you mean my gearbox is broken

 

[lucky phil]

Are you implying that it's residual manufacturing debris since its the first ever oil change, or do you mean my gearbox is broken

Manufacturing debris. There is no aluminium producing components in the gearbox apart from the housing. Unless it's steel from bearings or gears or copper/brass from syncro rings then aluminium can only be from one place and thats the gearbox casing and that wearing is totally remote unless there has been catastrophic issue. Not sure if this box has carbon fibre syncro rings or not but thats an aside. I'd really like some detailed info about the internals of this box but there're hard to come by
Phil

 

[Stratosphere Blue]

Manufacturing debris. There is no aluminium producing components in the gearbox apart from the housing. Unless it's steel from bearings or gears or copper/brass from syncro rings then aluminium can only be from one place and thats the gearbox casing and that wearing is totally remote unless there has been catastrophic issue. Not sure if this box has carbon fibre syncro rings or not but thats an aside. I'd really like some detailed info about the internals of this box but there're hard to come by
Phil

I agree, the housing is made of aluminum unless you have the outer bearing races spinning and causing abrasion, there shouldn’t be any aluminum in the oil. Unless it’s left over from casting.

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