Auto trans and diff fluid
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 64
Likes: 6
From: Riverview, Fl.
2006 IWC Ingenieur CLS 55 AMG
Auto trans and diff fluid
How often should it be changed? I know what Mercedes says miles wise, but what about years wise if your car doesn't get driven much?
Thanks!
Thanks!
Senior Member
Joined: May 2010
Posts: 250
Likes: 11
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I'd love to offer up a decent reply, but my CLS63 has been at the dealer for just over 3 weeks...with no end in sight. Its recommeded that you change your auto trans and diff fluid, but I don't know anyone who actually does it on a regular basis...although you should. I generally change the trans and diff fluid every 50k miles on my vehicles (assuming I keep them that long).
I took my CLS63 in for a slight "slam" when shifting only from 2nd to 3rd on COLD starts (35 degrees or less). The vehicle is under warranty so they've been following all of Mercedes' recommendations, but I'm getting awfully sick of driving this loaner....
I took my CLS63 in for a slight "slam" when shifting only from 2nd to 3rd on COLD starts (35 degrees or less). The vehicle is under warranty so they've been following all of Mercedes' recommendations, but I'm getting awfully sick of driving this loaner....
Senior Member
Joined: Feb 2008
Posts: 373
Likes: 0
From: Long Island, NY
06 CLS55 AMG
Plain and simple... Most fluids in your vehicle, with the exception of gas, really doesn't go bad with age. If you're not using it, it's basically not getting dirty and the additives are not being used up, therefore there really shouldn't be a need to change it.
Contrary to what the oil and fluid companies want you to believe, the only true way that these fluids go bad or are in need of changing is due to everyday use. How soon or how frequently depends on how much you use the vehicle, and how the vehicle is used.
Contrary to what the oil and fluid companies want you to believe, the only true way that these fluids go bad or are in need of changing is due to everyday use. How soon or how frequently depends on how much you use the vehicle, and how the vehicle is used.
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 64
Likes: 6
From: Riverview, Fl.
2006 IWC Ingenieur CLS 55 AMG
Plain and simple... Most fluids in your vehicle, with the exception of gas, really doesn't go bad with age. If you're not using it, it's basically not getting dirty and the additives are not being used up, therefore there really shouldn't be a need to change it.
Contrary to what the oil and fluid companies want you to believe, the only true way that these fluids go bad or are in need of changing is due to everyday use. How soon or how frequently depends on how much you use the vehicle, and how the vehicle is used.
Contrary to what the oil and fluid companies want you to believe, the only true way that these fluids go bad or are in need of changing is due to everyday use. How soon or how frequently depends on how much you use the vehicle, and how the vehicle is used.
Thread Starter
Junior Member
Joined: Jan 2011
Posts: 64
Likes: 6
From: Riverview, Fl.
2006 IWC Ingenieur CLS 55 AMG
I'd love to offer up a decent reply, but my CLS63 has been at the dealer for just over 3 weeks...with no end in sight. Its recommeded that you change your auto trans and diff fluid, but I don't know anyone who actually does it on a regular basis...although you should. I generally change the trans and diff fluid every 50k miles on my vehicles (assuming I keep them that long).
I took my CLS63 in for a slight "slam" when shifting only from 2nd to 3rd on COLD starts (35 degrees or less). The vehicle is under warranty so they've been following all of Mercedes' recommendations, but I'm getting awfully sick of driving this loaner....
I took my CLS63 in for a slight "slam" when shifting only from 2nd to 3rd on COLD starts (35 degrees or less). The vehicle is under warranty so they've been following all of Mercedes' recommendations, but I'm getting awfully sick of driving this loaner....
Senior Member
Joined: Feb 2008
Posts: 373
Likes: 0
From: Long Island, NY
06 CLS55 AMG
The fact of the matter is, you're constantly getting moisture into the engine, and transmission. This is due to the inherent design of these components and their necessity to "breath". This small amount of water (condensation) usually ends up getting burned up and out in the form of steam. So it's rarely a problem.
For condensation to pose a serious problem, you need a LOT of it, and that usually only happens to vehicles that end up sitting for year in harsh weather conditions. In any event these vehicles, if not properly maintained, usually end up with bigger problems than water in the fluids.
So unless you plan on storing your car like a museum show piece, I really wouldn't worry too much about condensation...
Super Member
Joined: Jan 2006
Posts: 958
Likes: 0
CLS55
Its recommended by who? I was told the tranny fluid was to be changed at 100K by mercedes spec.
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Senior Member
Joined: May 2010
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It's recommended if you plan to keep the car for an extended period of time...5+ years I'd say. I actually ran into something similar with my BMW Z4 the other day when I was researching trans and diff fluids. The transmission fluid is considered a "lifetime fluid" by BMW...is that my lifetime? The car's lifetime? I've always believed in an aggressive maintenance schedule to ensure longevity, but to each their own I guess.
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