I'm in the process of replacing the clutch set & slave cylinder/throwout bearing combination in a '93 Ranger with a M5R1 5speed transmission. I'm going back with the factory recommended Motorcraft Mercon V ATF. Does anyone know if Lucas transmission additive would hurt anything added to the ATF, I'm looking at making the oil slicker in addition to leaving a Teflon coating on everything for extra protection from wear? It may make it harder to shift also?
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No, if anything, easier. Only reason it's thicker is so the lubricant sticks to everything. Works extremely well. One quart will not make a difference in shifting.
