2006 X5 E53 4.4 140k miles Transmission Failure?

[TiAgX5]

Originally Posted by BigBlack48is

Had you ever checked or changed the transfer case fluid?

.....and checked chain stretch during fluid change by inserting screwdriver into drain hole and prying chain away from sprocket?

[BigBlack48is]

Originally Posted by TiAgX5

.....and checked chain stretch during fluid change by inserting screwdriver into drain hole and prying chain away from sprocket?

The reason I asked, is because I changed the fluid on mine @ 100k miles and surprisingly the fluid looked almost new. I still changed it anyways!

I waited until 120k on my chevy tahoe to change the transfer case fluid and it was dark, nasty and sparkly it only lasted until 180k, then I had to replace the output shaft snap ring, chain and shift fork pad. Ended up keeping the truck until 240k miles!

Hope I get that kind of mileage out of my E53!

[TiAgX5]

Originally Posted by BigBlack48is

The reason I asked, is because I changed the fluid on mine @ 100k miles and surprisingly the fluid looked almost new. I still changed it anyways!

I waited until 120k on my chevy tahoe to change the transfer case fluid and it was dark, nasty and sparkly it only lasted until 180k, then I had to replace the output shaft snap ring, chain and shift fork pad. Ended up keeping the truck until 240k miles!

Hope I get that kind of mileage out of my E53!

I changed mine at 100k also, fluid looked good. At over 160k now, X has been used to tow extensively and TC has held up without any issues.