If it is
you use either the Ford ATF or Dexron (any variety, i.e., Dexron I, II, or III)Just don't mix 'em.If you don't know what you have, that's good!Think of it this way, if you have to change it, you have to replace it all anyway!Suck out the old stuff and unless you have a replacement jug of Dexron MINUS III that your PO left you, just buy a quart of the newest transmission fluid of your choice and KEEP IT - it'll last for a few years. ATF is still just that, and Dexron's up to Mark III.Be careful about the dipstick. Reading it properly requires being just set on the top, not screwed down.It doesn't take very much transmission fluid to fill. Measure what you take out in, say, a plastic cup. Put the same amount back in.Interesting link from the C34 website: http://www.c34.org/faq-pages/faq-transmission-position-sailing.htmlStu