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Which ATF Fluid to use??

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Old Jan 14, 2023 | 05:16 PM
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Buck62's Avatar
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Joined: Nov 2021
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From: IL
Default Which ATF Fluid to use??

My trans has a small leak that seems to be coming from the electronic connector.
I already have the OEM Mercedes connector, based on the info I've read here.
I also have the instructions based on a thread here, the actual service bulletin, and two videos saved.
I'll probably need to add a bit of trans fluid after the swap... right?
I've seen several different suggestions here, and they vary by brand and number.
Based on those suggestions, (and what NAPA and Amazon suggest) I've narrowed it down to the ones below.
Which one of these would work? Any of them?? All of them? Thanks in advance.
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Last edited by Buck62; Jan 14, 2023 at 05:21 PM.
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Old Jan 16, 2023 | 07:56 AM
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zip439's Avatar
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Joined: Jul 2010
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From: SE Alabama
Default Re: Which ATF Fluid to use??

Pentosin ATF 134
And do not replace the connector, just the O-rings. The new connectors do not fit properly.
 
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Old Jan 16, 2023 | 10:32 AM
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dedwards0323's Avatar
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Joined: Nov 2008
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From: Upstate SC
Default Re: Which ATF Fluid to use??

The Shell ATF-134 has been around for quite awhile & was originally recommended by M-B on their fluid bulletin. Used to be the fluid for the original fill on transmissions at the factory. (see attached spec sheets)

I also agree with zip439 regarding the Pentosin product. Can't go wrong with their products. You can also use the Pentosin 1 LV fluid, which was developed to cover the M-B specs for the Crossfire 5-speed automatic.

I've also used the Pentosin DOT4 brake fluid when I installed SS brake lines & flushed the system on my 2007 Coupe.
 

Last edited by dedwards0323; Jan 16, 2023 at 10:51 AM.
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