My transmission is acting up. It was rebuilt 50,000 ago and set for a year because of other issues. Now that it is running again the transmission is not operating right. First thing in the morning it shifts fine and runs in overdrive, after 5 miles or so in no longer down shifts and stays in drive. will not go into overdrive or down to 2nd. Changed the oli,filter and put in a bottle of Lucas oil for shifting, no help.
Clues?
Clues?