Fella's,
My W210 has done 125K, and I'm considering changing the fluid of the .4 auto transmission. I believe the MB service schedule says that the fluid lasts for life, just like the diff in my previous W124 which went $$$ out at 100K...

What's your opinion? I understand it's not a cheap job like changing PS fluid, so if it's pointless I don't really mind skipping it.

Thanks!

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2011 Prius