i have a new oil pump&oil sending unit i drive for about 15 min oil pressure drops between 5 to 10 psi what else need to be replaced? may transmisson runs fine fwd /rev but backing up one time transmission fluid came back up out the dip stick.
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1990 Ford Bronco
Question: oil pressure & transmission
Answer #1Valleyautotech December 16, 2009, 15:25Master
As the oil heats up it gets thinner and pressure will be lower as the oil gets hot and about the transmission are you sure it wasn't overfull?
Reply1462calvin, December 17, 2009, 04:55Enthusiast
no it wasnt even full it was a half quart low i checked 2 day before it happen.