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« Reply #15 on: March 21, 2015, 06:04:21 AM »
Ralph, you will be fine with Dexron, I think they are up to Dexron 4 now? Original type f had a little higher friction rating. Some of the early racers used type f in their GM and Mopar transmissions to get that tiny edge of performance. A moderately operated  Ford transmission will get along just fine with modern transmission fluids. Don't think I would consider synthetic fluid in older transmissions.