That's where a little information is dangerous. If my vintage owner handbook says to use a certain spec, that's what I look for when selecting.

It's the same dilemma with our 20 year old van. The manual says to use Mercon ATF, not Dexron. I look on the shelf and all I see is Dex/Merc which is compatible with both Dexron III and Mercon, and Mercon V which says it's compatible with Mercon but some strongly advise against mixing with Mercon.

So many answers on the internet but nothing definitive or comprehensible by me from the only sources that matter - the folks who are liable if my engine or tranny fails.

[/rant]

Sixto
87 300D