Gear Oil Change Every Service - BMW Luxury Touring Community
 
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post #1 of 10 Old Jul 5th, 2009, 10:27 am Thread Starter
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Gear Oil Change Every Service

I looked at the gear oil at the dealer that came out of the final drive of a GS that had 50,000 miles on it and had never been changed. It looked and smelled aweful. The dealer automatically changes the oil in the final drive at every service interval. I wonder if constantly having clean oil put in at every 10K service will cut down on the probability of a final drive failure?
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post #2 of 10 Old Jul 5th, 2009, 10:54 am
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Re: Gear Oil Change Every Service

You can change the final drive fluid every one hundred miles. When it is "your" turn there is nothing to stop it from failing.

Mike Trevelino
Williamsburg, VA
2008 RT - Sold December 2019
2000 LT - Totaled at 99,960 miles


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post #3 of 10 Old Jul 5th, 2009, 12:58 pm
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Re: Gear Oil Change Every Service

Quote:
Originally Posted by ronk1200lt
I looked at the gear oil at the dealer that came out of the final drive of a GS that had 50,000 miles on it and had never been changed. It looked and smelled aweful. The dealer automatically changes the oil in the final drive at every service interval. I wonder if constantly having clean oil put in at every 10K service will cut down on the probability of a final drive failure?
Did the GS you're referring to have a final drive failure?? Just curious.

I'm anal on fluid changes for all our vehicles; wasted resources or not. In the case of ole Toad, we've had engine oil, tranny lube and final drive lube changed every 3,000 miles since new. We've had two final drive failures within the 125,000 mile run.

In ole Blue Truck, we changed engine oil every 3,000 miles and the other fluids when recommended. Before it got donated to charity, it ran 280,000 miles needing only three serpentine belts and one water pump. Nuttin' else beyond recommended service items.

Doesn't answer your question specifically, but is just a data point.
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post #4 of 10 Old Jul 5th, 2009, 3:22 pm
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Re: Gear Oil Change Every Service

Quote:
Originally Posted by mtrevelino
You can change the final drive fluid every one hundred miles. When it is "your" turn there is nothing to stop it from failing.
I agree ... As far as I can see there "IS NO" rhyme or reason to a final drive going out. I do oil every 6K also FD & trans every 12K with NO problems. some on this site have reported 150K plus miles with NO major problems. While other have had major issues with less then 50K.

Stevie Shreeve
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post #5 of 10 Old Sep 19th, 2013, 4:19 pm
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Re: Gear Oil Change Every Service

Quote:
Originally Posted by mtrevelino
You can change the final drive fluid every one hundred miles. When it is "your" turn there is nothing to stop it from failing.

Wow, I see you said every 100 miles?? Is that what you really mean? That would be
Nearly every ride? Please explain.
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post #6 of 10 Old Sep 19th, 2013, 4:38 pm
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Re: Gear Oil Change Every Service

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Originally Posted by Rightrudder2
Wow, I see you said every 100 miles?? Is that what you really mean? That would be
Nearly every ride? Please explain.
I do believe Mike typed that with tongue in cheek - right Mike??

And he's right about, when its your turn, it's your turn. I changed all fluids every 3 to 4k miles, and still had 3 Final Drives go south.
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post #7 of 10 Old Sep 19th, 2013, 7:07 pm
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Re: Gear Oil Change Every Service

The one thing frequent (6 K) oil changes does for you is it gives you a good indication of the drives current condition. Depending on what you see: a darkening of the oil (aluminum wear = taper bearing spinning) or shiny bits on the magnet (impending big bearing failure).

Most rear drive failures in the 30 - 90 K range were due to over shimming when setting the preload at assembly, while repeat failures are due to not correctly re-shimming the original failed drive during the repair.

John
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But lack DE, MA, RI and CT with the 2005 LT

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post #8 of 10 Old Sep 19th, 2013, 9:28 pm
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Re: Gear Oil Change Every Service

Quote:
Originally Posted by Rightrudder2
Wow, I see you said every 100 miles?? Is that what you really mean? That would be
Nearly every ride? Please explain.
What I said is correct. The failed bearings were not originally set up correctly from the factory so I feel that no matter how many times you change the FD oil, the bearing is going to fail, period.

Mike Trevelino
Williamsburg, VA
2008 RT - Sold December 2019
2000 LT - Totaled at 99,960 miles


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post #9 of 10 Old Sep 19th, 2013, 9:30 pm
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Re: Gear Oil Change Every Service

Quote:
Originally Posted by Dick
I do believe Mike typed that with tongue in cheek - right Mike??

And he's right about, when its your turn, it's your turn. I changed all fluids every 3 to 4k miles, and still had 3 Final Drives go south.
Thanks for the backup Dick!

Mike Trevelino
Williamsburg, VA
2008 RT - Sold December 2019
2000 LT - Totaled at 99,960 miles


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post #10 of 10 Old Sep 20th, 2013, 6:33 am
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Re: Gear Oil Change Every Service

I began changing FD lube with engine oil just to keep an eye on bearing condition.
It kept me from having a failure on a road trip , thats all I expected.

Bob G
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