Six-speed manual trans fluid recommendation? - Mercedes-Benz Forum

 
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post #1 of 3 (permalink) Old 02-18-2007, 04:26 AM Thread Starter
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Six-speed manual trans fluid recommendation?

Hi all,

I didn't see a "general tech forum" and this trans is found in at least five different MB product lines, so I'm asking here.

I have a 2005 Jeep Wrangler with the DaimlerChrysler NSG370 six-speed manual. Chrysler recommends MS-9224 spec fluid as a service fill for this trans. I'm not at all happy with how this fluid has thinned over the last 8,000 miles which promotes a nasty countershaft rattle under the right conditions.

Does anyone know the MB fluid spec for this gearbox? I know it's found in certain C's, CLK's, SLK's, Sprinters, non-US M's, non-US E's, and a few other platforms. I'm trying to go "off-spec" with this gearbox and I need some guidance. What are you guys running in this unit?

Thanks!
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post #2 of 3 (permalink) Old 02-18-2007, 12:56 PM
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Originally Posted by richard612
Hi all,

I didn't see a "general tech forum" and this trans is found in at least five different MB product lines, so I'm asking here.

I have a 2005 Jeep Wrangler with the DaimlerChrysler NSG370 six-speed manual. Chrysler recommends MS-9224 spec fluid as a service fill for this trans. I'm not at all happy with how this fluid has thinned over the last 8,000 miles which promotes a nasty countershaft rattle under the right conditions.

Does anyone know the MB fluid spec for this gearbox? I know it's found in certain C's, CLK's, SLK's, Sprinters, non-US M's, non-US E's, and a few other platforms. I'm trying to go "off-spec" with this gearbox and I need some guidance. What are you guys running in this unit?

Thanks!
That sure is a tricky question to answer;
Our MB's use MB Tranny Fluid; Full Synthetic. Using anything other than MB fluid in our Trannys generally causes major complications immediately or down the road. Which is why MB owners default to using only MB Fluid.

Because your manual calls for DaimlerChrysler fluid does not necessarily mean its a true German tranny. I really doubt it is. If its US-spec Tranny ( probably made in Mexico/Canada ) then your fine using the myriad of products out there.

I know with my Honda Accord if you used anything other than Honda Tranny you'd pay the $$$$ price. Catastrophic failure soon to follow.

What does your Owners Manual say?
They all say use "XYZ" Fluid ( their own ) but if you read carefully the language states.."or equivalent". Therein lies the wiggle room.

Your 2005 is still under Warranty...Yes?
What does local Stealership say?

Charles
New York City, NY
Richmond County

United States of America
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post #3 of 3 (permalink) Old 02-18-2007, 01:55 PM Thread Starter
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Thanks for the reply. This really is an MB gearbox with a special bellhousing for mating it to the old AMC inline-six lump of an engine. The NSG370 designation is referenced in various Mercedes product literature from all over the world, and this particular trans even has cast into its side the company name of the German OEM supplier who cast the housing. It's no secret that DC went digging in the global parts bin for this gearbox, and they starting importing it at the same time that they brought in the Getrag 238.

Finally, check out how many MB products have these ratios -- It'll shock and amaze you:

4.46:1 first
2.61:1 second
1.72:1 third
1.25:1 fourth
1:1 fifth
0.84:1 sixth
4.06:1 reverse

You'll also see these ratios in the Liberty, Wrangler, and the Chrysler Crossfire.

The owners manual does not specify a fluid. It wasn't until a few months after these rigs started shipping that a TSB came down from on high which specified MS-9224 for these boxes. MS-9224 is a special sauce for several American-made New Venture gearboxes and Chrysler's selection of this lube is puzzling. This lube and the NSG370 were designed a world apart from each other.
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