Chocolate gearbox oil syndrome

Two postings from the Yamaha Diversion web site. First one is mine.


Max900, you preyed on my insecurity Just been into the garage & changed the final drive oil. (used 80/90 GL5 spec.)

A horrible shade of brown, not at all like the oil in the BMW FD, when I change that ( every 6000 miles) So your statement was probably correct about garages not bothering to change the oil.

As per usual managed to drip oil onto the floor
« Last Edit: Sept 15, 2007, 12:04pm by eliminator » Link to Post - Back to Top Logged

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1150GS XJ900S

Shaft drive 1 Chain drive 0

max900
Harley Rider

member is offline

Joined: Feb 2007
Posts: 152
Re: Servicing recommendations
« Reply #6 on Sept 17, 2007, 6:25pm »

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Sept 15, 2007, 12:02pm, eliminator wrote:Max900, you preyed on my insecurity Just been into the garage & changed the final drive oil. (used 80/90 GL5 spec.)

A horrible shade of brown, not at all like the oil in the BMW FD, when I change that ( every 6000 miles) So your statement was probably correct about garages not bothering to change the oil.

As per usual managed to drip oil onto the floor



lol yep i discovered this when my bike went in for its 20k service a few years ago it was a local mechanic who did it and asked me if the shaft oil needed to be changed no idea says i so do it while your there
when i picked the bike back up he showed me something resembling brown water he reckoned it was the original oil(from factory)and was amazed my shaft hadn't seized (me too ) now i do all fluid changes myself and the shaft oil gets changed every 4k along with oil/filters might not need doing that often but its pretty inexpensive way of keeping things going.

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ktmmark, hopefully there will be no other consequences. The bit about a sealed bearing leaking out its grease seems a bit odd, why bother putting a sealed bearing in a bath of oil? The optimistic part of his reply was the bit about 20K & a few years ago.
 
The oil is changed every 6000 mile & last 2 times it has been brown (he uses full synthetic) the bearings in the bmw gearbox are sealed (clean bearings)it stops the metal from the gears getting beaten into the race
 
Results back on the oil,metal in oil should be 20 ppm this oil has 178 ppm ,so the bike is coming in to have the gearbox inspected
 


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