Trans service

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Ponyguy
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Trans service

Post by Ponyguy » January 6th, 2020, 5:52 pm

How often should I flush the transmission?

Service Dept says if it's never been done, just ignore it. The flushing machine will mess up the clutches.

I THINK I did it about 8 or 10 years ago, but I'm not certain...

I have 145,000 miles on the Merc.

Thanks!
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Re: Trans service

Post by LTC_Dave » January 6th, 2020, 9:00 pm

Ponyguy wrote:
January 6th, 2020, 5:52 pm
How often should I flush the transmission?
Every 30k miles is preferred.
Ponyguy wrote:
January 6th, 2020, 5:52 pm
Service Dept says if it's never been done, just ignore it. The flushing machine will mess up the clutches
That can happen, but is not likely.
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Re: Trans service

Post by Ponyguy » January 9th, 2020, 4:09 am

Thanks, Dave...
The service manager said the factory recommended interval was 60k for "normal" use, and 30k for "extreme" use... but "factory recommendations" are sometimes not congruent with reality.
Looking back at my records, I had the "trans service" done at about 60k miles, (about 10 years ago) and they did it with the "flushing machine," and didn't drop the pan.
I haven't decided if I'm going to do it or not... they want $265 to flush it with the machine... and even more to drop the pan. Kind of rich for my blood...
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Re: Trans service

Post by CrownBen » January 9th, 2020, 11:30 am

Back in my quick lube days (late 90s-2000), we avoided doing a full flush to cars if they had much over 100K and had never had it done before, due to the stories of causing more harm than good. Pan drop wasn't such a big deal, since not that much fluid ends up coming out.
$265???? Holy crap! We charged $85. (There was a surcharge for Chrysler ATF+4, which was new at the time. Didn't have that in bulk.). I think it's around $140 at the lube shop I've been going to, and I thought that was bad!
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