A little searching will reveal that 123 owner's manual recommended the same AT fluid for both the transmission and the power steering. Current threads are of the opinion that the 25+ year old recommendations are out of date and current ATF contains newer additives that can cause the power steering to leak.

My favorite indy was not aware of this and raised this question which left me stumped:

"If the new formulations af ATF can cause the 123 power steering to leak, what should you be putting in the automatic transmission? If would have been built with the same type of materials for seals, o-rings, etc."

Comments?

Older formulations of ATF are hard to come by, what are you using?
Power steering fluid for the power steering but what about the automatic transmission?

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Charles
1983 300D, bought new, 215k+ miles, donated to Purple Hearts veterans charity but I have parts for sale: http://www.peachparts.com/shopforum/showthread.php?t=296386