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  #1  
Old 03-05-2012, 07:48 PM
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Adding tranny fluid to a GL450

Someone I know proceeded to dump the tranny fluid on his '07 GL450 and change the filter, then discovered that there is no apparent way to replace the fluid. There is no obvious dipstick tube to put fluid back in.

Even though MB went cost cutting nuts by eliminating dipsticks, there still has to be a way to replenish the fluid. How did the factory put the fluid in, in the first place?

Any help would be greatly appreciated.
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  #2  
Old 03-06-2012, 05:24 AM
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You need special pump through drain plug if it's 7speed trany.
Good luck
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  #3  
Old 03-06-2012, 08:20 AM
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Ditto, thru the drain plug.

Check the fluid level at 35-40C, with car running & in park.

ie; remove the drain plug when fluid is at the temperature & a few drops should come out.
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Old 03-06-2012, 08:26 AM
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Ok, please explain to me how you fill up, from the bottom. Is the drainplug on these newer transmissions not a "drainplug" in the traditional sense, but a check valve. I don't see how you can pump fluid up and into the tranny through a drainplug hole, without it coming back out. What happened to the trainplugs on the torque converter, which is where the bulk of the fluid is?

Thanks
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1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
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President of CT/Westchester Section
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  #5  
Old 03-06-2012, 08:29 AM
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There is a plastic extension just above the drain plug that sets the fluid level.

Of course you will need to PUMP the fluid (4 liters) into the trans.

AST tools have a nice system for that job.
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44 years foreign automotive repair
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1986 190E 2.3 16V 2.5 (sold)
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Old 03-06-2012, 08:29 AM
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