Yes, Type F was the original fluid, but believe it has a tendency to make the plastic pump lines brittle and caused them to crack over time. That is why most replace it with Dexron Mercon. Type F is also known to make rubber seals brittle as well. The Dexron Mercon runs like a champ and you would never know the difference that's why today the Dexron Mercon is recommended over the original Type F fluid in Convertible Top Pumps. The Dexron Mercon does not contain the Caustic properties of the Type F. I think I read that somewhere long ago. Just a tip.
)
Tony K.
