I started a thread over in the Tech Help forum - here's the link:

Mobil-1 changed their ATF formula...

Basically, the new Mobil-1 "Multi-Vehicle Formula" ATF isn't Dexron approved, and Mobil recommends that GM cars up to 2005 requiring Dexron fluids use their Mobil Dexron VI (non-synthetic) fluid instead. The new M-1 MVF stuff says "Mercon" all over it. Our pre-2000 Mercedes typically need a Dexron III fluid.

Looks like I'll be switching to Amsoil in the future, unless I can find a few cases of the "old" M-1 ATF on clearance somewhere.

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