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ATF Fluid

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Old Apr 25, 2015 | 03:43 PM
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c300, Maserati coupe
ATF Fluid
I have a 2009 C300 54000 miles. I think this will be he first ATF change. I want to use Pentosin full synthetic. Will this be a problem? Is there a problem using this, as there will still be some original MB ATF in the trans? Thanks
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Old Apr 25, 2015 | 07:34 PM
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2009 C63 AMG, 2010 C250 4Matic Sport
Only use 236.14 approved ATF

If it is the first ATF change, you're 15k miles late!
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Old Apr 25, 2015 | 11:23 PM
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c300, Maserati coupe
I understand that!!! Just bought the car.. Need a little info is all. The question is, if it is ok to use full synthetic, when changing from original MB ATF?
Last edited by kodpkd; Apr 26, 2015 at 10:46 AM.
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Old Apr 27, 2015 | 01:04 AM
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Originally Posted by kodpkd
I understand that!!! Just bought the car.. Need a little info is all. The question is, if it is ok to use full synthetic, when changing from original MB ATF?

DO NOT use any fluid other than the ones listed on the link above.
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Old Apr 27, 2015 | 01:50 AM
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Originally Posted by kodpkd
I have a 2009 C300 54000 miles. I think this will be he first ATF change. I want to use Pentosin full synthetic. Will this be a problem? Is there a problem using this, as there will still be some original MB ATF in the trans? Thanks
Pentosin LV ATF is approved for use. Although it is not listed on the mb site, Pentosin states on its website it is approved for MB 722.9. I have contacted them personally to verify this.

The new fluid will be contaminated with old fluid, members will tell you this is not okay and should drain the TC. I will tell you from my experience, a simple fluid change is fine. My existing fluid was clean, transparent, didn't smell burnt, and its lubricity was clearly still present. Be sure to change the filter, clean the magnets, clean the pan, and replace the gasket and you should be good to go. Any bit of dirt or metallic debris from the old fluid still in the torque converter and tranny will be picked up by the new filter and magnet anyway.
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Old Apr 27, 2015 | 11:46 AM
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c300, Maserati coupe
I bought Titan 4134. Tell you the truth, I am not really sure what trans I have in the 09 C-300 AWD, I assume it's a 722.9. Not sure why it's such a secret. None of the MB manuals tell you. "A dealer item" I guess.
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Old Apr 27, 2015 | 11:08 PM
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2011 C300 4matic sport
You bought the correct fluid (red) and you do have the pre-2010 (not "plus") 722.9 transmission. It's not a secret; your decoded VIN will say for sure if you want peace of mind.
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Old Apr 28, 2015 | 04:19 AM
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Yup, I run Titan 4134 also in my 2010 pre-FL 5g tranny. Works fine.
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Old Apr 28, 2015 | 09:25 AM
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c300, Maserati coupe
Originally Posted by global33
You bought the correct fluid (red) and you do have the pre-2010 (not "plus") 722.9 transmission. It's not a secret; your decoded VIN will say for sure if you want peace of mind.


I guess I didn't get my decoder ring when I bought the car..
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Old Apr 28, 2015 | 10:22 AM
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http://www.vindecoderz.com/EN/Mercedes-Benz
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Old Apr 28, 2015 | 03:44 PM
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c300, Maserati coupe
Originally Posted by global33


Got it, cool. Thanks.. I did see the 14 digit engine number, now I know it is the rest of the 2729 number.
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